diff --git a/.gitignore b/.gitignore
index ac7edcc2..1396e76d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,9 @@
 *.iml
 .gradle
-bintray.gradle
 /.idea
 /screenshots
 /local.properties
 .DS_Store
 /build
 /captures
+libs/
diff --git a/README.md b/README.md
index f7227e3b..4b7f776e 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@
 
  * 对于Android Studio的用户，可以选择添加:
 ```java
-    compile 'com.lzy.net:okhttputils:1.5.2'  //可以单独使用，不需要依赖下方的扩展包
+    compile 'com.lzy.net:okhttputils:1.6.0'  //可以单独使用，不需要依赖下方的扩展包
 	compile 'com.lzy.net:okhttpserver:0.1.7' //扩展了下载管理和上传管理，根据需要添加
 
 	compile 'com.lzy.net:okhttputils:+'  //版本号使用 + 可以自动引用最新版
@@ -46,7 +46,7 @@
 ```
 * 对于Eclipse的用户，可以选择添加 `/lib` 目录下的:
 ```java
-	okhttputils-1.5.2.jar
+	okhttputils-1.6.0.jar
 	okhttpserver-0.1.7.jar
 ```
 
@@ -63,6 +63,7 @@
 * 一般的 get,post,put,delete,head,options请求
 * 基于Post的大文本数据上传
 * 多文件和多参数统一的表单上传
+* 支持一个key上传一个文件，也可以一个Key上传多个文件
 * 大文件下载和下载进度回调
 * 大文件上传和上传进度回调
 * 支持cookie的内存存储和持久化存储，支持传递自定义cookie
@@ -143,7 +144,7 @@ OkHttpUtils.get(Urls.URL_DOWNLOAD)//
 	});
 ```
 ### 4.普通Post，直接上传String类型的文本
-不建议这么用，该方法上传字符串会清空实体中其他所有的参数，但头信息不清除
+一般此种用法用于与服务器约定的数据格式，当使用该方法时，params中的参数设置是无效的，所有参数均需要通过需要上传的文本中指定，此外，额外指定的header参数仍然保持有效。
 ```java
 OkHttpUtils.post(Urls.URL_TEXT_UPLOAD)//
 	.tag(this)//
@@ -157,7 +158,7 @@ OkHttpUtils.post(Urls.URL_TEXT_UPLOAD)//
 ```
 
 ### 5.普通Post，直接上传Json类型的文本
-不建议这么用，该方法上传字符串会清空实体中其他所有的参数，但头信息不清除
+该方法与postString没有本质区别，只是数据格式是json,一般来说，需要自己创建一个实体bean或者一个map，把需要的参数设置进去，然后通过三方的Gson或者fastjson转换成json字符串，最后直接使用该方法提交到服务器。
 ```java
 OkHttpUtils.post(Urls.URL_TEXT_UPLOAD)//
 	.tag(this)//
@@ -196,6 +197,9 @@ OkHttpUtils.get(Urls.URL_METHOD) // 请求方式和请求url, get请求不需要
     .params("param2", "paramValue2")        // 支持多请求参数同时添加
     .params("file1", new File("filepath1")) // 可以添加文件上传
     .params("file2", new File("filepath2")) // 支持多文件同时添加上传
+	.addUrlParams("key", List<String> values) 									//这里支持一个key传多个参数
+	.addFileParams("key", List<File> files)										//这里支持一个key传多个文件
+	.addFileWrapperParams("key", List<HttpParams.FileWrapper> fileWrappers)		//这里支持一个key传多个文件
 	.addCookie("aaa", "bbb")				// 这里可以传递自己想传的Cookie
     .addCookie(cookie)						// 可以自己构建cookie
     .addCookies(cookies)					// 可以一次传递批量的cookie
diff --git a/app/build.gradle b/app/build.gradle
index f7d642d9..647c51de 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,8 +8,8 @@ android {
         applicationId "com.lzy.okhttpdemo"
         minSdkVersion 14
         targetSdkVersion 22
-        versionCode 17
-        versionName "1.5.2"
+        versionCode 18
+        versionName "1.6.0"
     }
     buildTypes {
         release {
@@ -40,7 +40,7 @@ dependencies {
     compile 'com.jakewharton:butterknife:7.0.1'
     compile 'com.google.code.gson:gson:2.5'
 
-    compile 'com.lzy.widget:imagepicker:0.2.1'
+    compile 'com.lzy.widget:imagepicker:0.2.6'
     compile 'com.lzy.widget:view-core:0.2.1'
 //    compile 'com.lzy.net:okhttputils:+'
 //    compile 'com.lzy.net:okhttpserver:+'
diff --git a/app/src/main/java/com/lzy/okhttpdemo/GApp.java b/app/src/main/java/com/lzy/okhttpdemo/GApp.java
index a12bf347..89699d56 100644
--- a/app/src/main/java/com/lzy/okhttpdemo/GApp.java
+++ b/app/src/main/java/com/lzy/okhttpdemo/GApp.java
@@ -3,7 +3,6 @@
 import android.app.Application;
 
 import com.lzy.okhttputils.OkHttpUtils;
-import com.lzy.okhttputils.cookie.store.MemoryCookieStore;
 import com.lzy.okhttputils.cookie.store.PersistentCookieStore;
 import com.lzy.okhttputils.model.HttpHeaders;
 import com.lzy.okhttputils.model.HttpParams;
diff --git a/app/src/main/java/com/lzy/okhttpdemo/activity/FormUploadActivity.java b/app/src/main/java/com/lzy/okhttpdemo/activity/FormUploadActivity.java
index eda647ff..a9d6040d 100644
--- a/app/src/main/java/com/lzy/okhttpdemo/activity/FormUploadActivity.java
+++ b/app/src/main/java/com/lzy/okhttpdemo/activity/FormUploadActivity.java
@@ -22,7 +22,6 @@
 import com.lzy.okhttpdemo.utils.Urls;
 import com.lzy.okhttputils.OkHttpUtils;
 import com.lzy.okhttputils.request.BaseRequest;
-import com.lzy.okhttputils.request.PostRequest;
 
 import java.io.File;
 import java.util.ArrayList;
@@ -80,8 +79,7 @@ public void onActivityResult(int requestCode, int resultCode, Intent data) {
                 if (imageItems != null && imageItems.size() > 0) {
                     StringBuilder sb = new StringBuilder();
                     for (int i = 0; i < imageItems.size(); i++) {
-                        if (i == imageItems.size() - 1)
-                            sb.append("图片").append(i + 1).append(" ： ").append(imageItems.get(i).path);
+                        if (i == imageItems.size() - 1) sb.append("图片").append(i + 1).append(" ： ").append(imageItems.get(i).path);
                         else sb.append("图片").append(i + 1).append(" ： ").append(imageItems.get(i).path).append("\n");
                     }
                     tvImages.setText(sb.toString());
@@ -97,21 +95,24 @@ public void onActivityResult(int requestCode, int resultCode, Intent data) {
 
     @OnClick(R.id.formUpload)
     public void formUpload(View view) {
+        ArrayList<File> files = new ArrayList<>();
+        if (imageItems != null && imageItems.size() > 0) {
+            for (int i = 0; i < imageItems.size(); i++) {
+                files.add(new File(imageItems.get(i).path));
+            }
+        }
         //拼接参数
-        PostRequest request = OkHttpUtils.post(Urls.URL_FORM_UPLOAD)//
+        OkHttpUtils.post(Urls.URL_FORM_UPLOAD)//
                 .tag(this)//
                 .headers("header1", "headerValue1")//
                 .headers("header2", "headerValue2")//
                 .params("param1", "paramValue1")//
-                .params("param2", "paramValue2");//
-        //拼接选中的文件参数（如果文件个数已知，可以链式调用到底，就不用这么断开了）
-        if (imageItems != null && imageItems.size() > 0) {
-            for (int i = 0; i < imageItems.size(); i++) {
-                request.params("file" + (i + 1), new File(imageItems.get(i).path));
-            }
-        }
-        //执行请求
-        request.execute(new ProgressUpCallBack<>(this, RequestInfo.class));
+                .params("param2", "paramValue2")//
+//                .params("file1",new File("文件路径"))   //这种方式为一个key，对应一个文件
+//                .params("file2",new File("文件路径"))
+//                .params("file3",new File("文件路径"))
+                .addFileParams("file", files)           // 这种方式为同一个key，上传多个文件
+                .execute(new ProgressUpCallBack<>(this, RequestInfo.class));
     }
 
     private class ProgressUpCallBack<T> extends JsonCallback<T> {
diff --git a/app/src/main/java/com/lzy/okhttpdemo/activity/TestActivity.java b/app/src/main/java/com/lzy/okhttpdemo/activity/TestActivity.java
index 732bce3d..c522f691 100644
--- a/app/src/main/java/com/lzy/okhttpdemo/activity/TestActivity.java
+++ b/app/src/main/java/com/lzy/okhttpdemo/activity/TestActivity.java
@@ -7,9 +7,13 @@
 
 import com.lzy.okhttpdemo.R;
 import com.lzy.okhttpdemo.callback.StringDialogCallback;
+import com.lzy.okhttpdemo.utils.Urls;
 import com.lzy.okhttputils.OkHttpUtils;
 import com.lzy.okhttputils.callback.StringCallback;
 
+import java.io.File;
+import java.util.ArrayList;
+
 import butterknife.ButterKnife;
 import butterknife.OnClick;
 import okhttp3.Request;
@@ -26,8 +30,15 @@ protected void onCreate(Bundle savedInstanceState) {
 
     @OnClick(R.id.btn1)
     public void btn1(View view) {
-        OkHttpUtils.get("http://www.qunar.com")//
+        ArrayList<String> params = new ArrayList<>();
+        params.add("111");
+        params.add("222");
+        params.add("333");
+        params.add("444");
+        OkHttpUtils.get(Urls.URL_METHOD)//
                 .tag(this)//
+                .addUrlParams("aaa",params)
+                .params("ddd","444")
                 .execute(new StringCallback() {
                     @Override
                     public void onResponse(boolean isFromCache, String s, Request request, @Nullable Response response) {
@@ -37,11 +48,17 @@ public void onResponse(boolean isFromCache, String s, Request request, @Nullable
 
     @OnClick(R.id.btn2)
     public void btn2(View view) {
-        OkHttpUtils.post("http://dev.11yuehui.com/WebApi/Login/login.html")//
+        ArrayList<String> params = new ArrayList<>();
+        params.add("111");
+        params.add("222");
+        params.add("333");
+        params.add("444");
+        OkHttpUtils.post(Urls.URL_METHOD)//
                 .tag(this)//
-                .params("username", "273029")    //用户名
-                .params("password", "273029tc")  //密码
-                .execute(new StringDialogCallback(this) {
+                .addUrlParams("aaa",params)
+                .params("bbb","666")
+                .params("ccc","777")
+                .execute(new StringCallback() {
                     @Override
                     public void onResponse(boolean isFromCache, String s, Request request, @Nullable Response response) {
                     }
@@ -50,6 +67,14 @@ public void onResponse(boolean isFromCache, String s, Request request, @Nullable
 
     @OnClick(R.id.btn3)
     public void btn3(View view) {
-
+        OkHttpUtils.post("http://dev.11yuehui.com/WebApi/Login/login.html")//
+                .tag(this)//
+                .params("username", "273029")    //用户名
+                .params("password", "273029tc")  //密码
+                .execute(new StringDialogCallback(this) {
+                    @Override
+                    public void onResponse(boolean isFromCache, String s, Request request, @Nullable Response response) {
+                    }
+                });
     }
 }
diff --git a/app/src/main/java/com/lzy/okhttpdemo/callback/EncryptCallback.java b/app/src/main/java/com/lzy/okhttpdemo/callback/EncryptCallback.java
index 042f8d30..345168af 100644
--- a/app/src/main/java/com/lzy/okhttpdemo/callback/EncryptCallback.java
+++ b/app/src/main/java/com/lzy/okhttpdemo/callback/EncryptCallback.java
@@ -5,6 +5,7 @@
 import com.lzy.okhttputils.request.BaseRequest;
 
 import java.util.Comparator;
+import java.util.List;
 import java.util.Map;
 import java.util.Random;
 import java.util.TreeMap;
@@ -39,7 +40,7 @@ private void sign(HttpParams params) {
         params.put("nonce", getRndStr(6 + RANDOM.nextInt(8)));
         params.put("timestamp", "" + (System.currentTimeMillis() / 1000L));
         StringBuilder sb = new StringBuilder();
-        for (Map.Entry<String, String> entry : getSortedMapByKey(params.urlParamsMap).entrySet()) {
+        for (Map.Entry<String, List<String>> entry : getSortedMapByKey(params.urlParamsMap).entrySet()) {
             sb.append(entry.getKey()).append("=").append(entry.getValue()).append("&");
         }
         sb.delete(sb.length() - 1, sb.length());
@@ -59,15 +60,15 @@ private String getRndStr(int length) {
     }
 
     /** 按照key的自然顺序进行排序，并返回 */
-    private Map<String, String> getSortedMapByKey(ConcurrentHashMap<String, String> map) {
+    private Map<String, List<String>> getSortedMapByKey(ConcurrentHashMap<String, List<String>> map) {
         Comparator<String> comparator = new Comparator<String>() {
             @Override
             public int compare(String lhs, String rhs) {
                 return lhs.compareTo(rhs);
             }
         };
-        TreeMap<String, String> treeMap = new TreeMap<>(comparator);
-        for (Map.Entry<String, String> entry : map.entrySet()) {
+        TreeMap<String, List<String>> treeMap = new TreeMap<>(comparator);
+        for (Map.Entry<String, List<String>> entry : map.entrySet()) {
             treeMap.put(entry.getKey(), entry.getValue());
         }
         return treeMap;
diff --git a/app/src/main/java/com/lzy/okhttpdemo/utils/Urls.java b/app/src/main/java/com/lzy/okhttpdemo/utils/Urls.java
index b6d45a78..20db7520 100644
--- a/app/src/main/java/com/lzy/okhttpdemo/utils/Urls.java
+++ b/app/src/main/java/com/lzy/okhttpdemo/utils/Urls.java
@@ -11,7 +11,7 @@
  */
 public class Urls {
     public static final String SERVER = "http://server.jeasonlzy.com/OkHttpUtils/";
-    //        public static final String SERVER = "http://192.168.1.102:8080/OkHttpUtils/";
+    //    public static final String SERVER = "http://192.168.1.121:8080/OkHttpUtils/";
     public static final String URL_METHOD = SERVER + "method";
     public static final String URL_CACHE = SERVER + "cache";
     public static final String URL_IMAGE = SERVER + "image";
diff --git a/build.gradle b/build.gradle
index 9b53ff23..cd8e87f8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.0'
+        classpath 'com.android.tools.build:gradle:2.1.2'
 
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.0'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.3'
diff --git a/lib/okhttputils-1.5.2.jar b/lib/okhttputils-1.6.0.jar
similarity index 61%
rename from lib/okhttputils-1.5.2.jar
rename to lib/okhttputils-1.6.0.jar
index 38d26170..2f113698 100644
Binary files a/lib/okhttputils-1.5.2.jar and b/lib/okhttputils-1.6.0.jar differ
diff --git a/okhttpserver/bintray.gradle b/okhttpserver/bintray.gradle
new file mode 100644
index 00000000..9f7319d1
--- /dev/null
+++ b/okhttpserver/bintray.gradle
@@ -0,0 +1,100 @@
+apply plugin: 'com.github.dcendents.android-maven'
+apply plugin: 'com.jfrog.bintray'
+
+version = "0.1.7"              // 数据仓库依赖第三部分
+
+def siteUrl = 'https://github.com/jeasonlzy0216/OkHttpUtils'
+def gitUrl = 'https://github.com/jeasonlzy0216/OkHttpUtils.git'
+group = "com.lzy.net"       // 数据仓库依赖第一部分
+
+install {
+    repositories.mavenInstaller {
+        pom {
+            project {
+                packaging 'aar'
+                name 'okhttpserver For Android'     // 项目描述
+                url siteUrl
+                licenses {
+                    license {
+                        name 'The Apache Software License, Version 2.0'
+                        url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
+                    }
+                }
+                developers {
+                    developer {
+                        id 'jeasonlzy'                // 开发者信息
+                        name 'LiaoZiYao'              // 开发者信息
+                        email 'liaojeason@126.com'    // 开发者信息
+                    }
+                }
+                scm {
+                    connection gitUrl
+                    developerConnection gitUrl
+                    url siteUrl
+                }
+            }
+        }
+    }
+}
+
+task sourcesJar(type: Jar) {
+    from android.sourceSets.main.java.srcDirs
+    classifier = 'sources'
+}
+
+task javadoc(type: Javadoc) {
+    source = android.sourceSets.main.java.srcDirs
+    classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
+}
+
+task javadocJar(type: Jar, dependsOn: javadoc) {
+    classifier = 'javadoc'
+    from javadoc.destinationDir
+}
+
+javadoc {
+    options {
+        encoding "UTF-8"
+        charSet 'UTF-8'
+        author true
+        version true
+        links "http://docs.oracle.com/javase/7/docs/api"
+        title 'okhttpserver For Android'   // 文档标题
+    }
+}
+
+artifacts {
+//    archives javadocJar
+    archives sourcesJar
+}
+
+//定义一个函数，target是生成jar包的文件名
+def makeJar(String target) {
+    exec {
+        executable "jar"   //调用jar
+        args "cvf", target
+        args "-C", "build/intermediates/classes/release"
+        args "", "."
+    }
+}
+
+//新建一个task,名为buildLib,依赖build(build是一个自带的task)
+task buildLib(dependsOn: build) {
+    makeJar("../lib/okhttpserver-" + version + ".jar")
+}
+
+Properties properties = new Properties()
+properties.load(project.rootProject.file('local.properties').newDataInputStream())
+bintray {
+    user = properties.getProperty("bintray.user")
+    key = properties.getProperty("bintray.apikey")
+    configurations = ['archives']
+    pkg {
+        repo = "maven"
+        name = "okhttpserver"             // 数据仓库依赖第二部分
+        websiteUrl = siteUrl
+        vcsUrl = gitUrl
+        licenses = ["Apache-2.0"]
+        publish = true
+    }
+}
diff --git a/okhttputils/bintray.gradle b/okhttputils/bintray.gradle
new file mode 100644
index 00000000..5b751b8e
--- /dev/null
+++ b/okhttputils/bintray.gradle
@@ -0,0 +1,93 @@
+apply plugin: 'com.github.dcendents.android-maven'
+apply plugin: 'com.jfrog.bintray'
+
+version = "1.6.0"              // 数据仓库依赖第三部分
+
+def siteUrl = 'https://github.com/jeasonlzy0216/OkHttpUtils'
+def gitUrl = 'https://github.com/jeasonlzy0216/OkHttpUtils.git'
+group = "com.lzy.net"       // 数据仓库依赖第一部分
+
+install {
+    repositories.mavenInstaller {
+        pom {
+            project {
+                packaging 'aar'
+                name 'OkHttpUtils For Android'     // 项目描述
+                url siteUrl
+                licenses {
+                    license {
+                        name 'The Apache Software License, Version 2.0'
+                        url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
+                    }
+                }
+                developers {
+                    developer {
+                        id 'jeasonlzy'                // 开发者信息
+                        name 'LiaoZiYao'              // 开发者信息
+                        email 'liaojeason@126.com'    // 开发者信息
+                    }
+                }
+                scm {
+                    connection gitUrl
+                    developerConnection gitUrl
+                    url siteUrl
+                }
+            }
+        }
+    }
+}
+
+task sourcesJar(type: Jar) {
+    from android.sourceSets.main.java.srcDirs
+    classifier = 'sources'
+}
+
+task javadoc(type: Javadoc) {
+    source = android.sourceSets.main.java.srcDirs
+    classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
+}
+
+task javadocJar(type: Jar, dependsOn: javadoc) {
+    classifier = 'javadoc'
+    from javadoc.destinationDir
+}
+
+javadoc {
+    options {
+        encoding "UTF-8"
+        charSet 'UTF-8'
+        author true
+        version true
+        links "http://docs.oracle.com/javase/7/docs/api"
+        title 'OkHttpUtils For Android'   // 文档标题
+    }
+}
+
+artifacts {
+//    archives javadocJar
+    archives sourcesJar
+}
+
+// 生成jar包
+task releaseJar(type: Copy) {
+    from( 'build/intermediates/bundles/release')
+    into( '../lib')
+    include('classes.jar')
+    rename('classes.jar', 'okhttputils-' + version + '.jar')
+}
+
+Properties properties = new Properties()
+properties.load(project.rootProject.file('local.properties').newDataInputStream())
+bintray {
+    user = properties.getProperty("bintray.user")
+    key = properties.getProperty("bintray.apikey")
+    configurations = ['archives']
+    pkg {
+        repo = "maven"
+        name = "okhttputils"             // 数据仓库依赖第二部分
+        websiteUrl = siteUrl
+        vcsUrl = gitUrl
+        licenses = ["Apache-2.0"]
+        publish = true
+    }
+}
diff --git a/okhttputils/build.gradle b/okhttputils/build.gradle
index e20b1ce8..ae851edf 100644
--- a/okhttputils/build.gradle
+++ b/okhttputils/build.gradle
@@ -8,7 +8,7 @@ android {
         minSdkVersion 8
         targetSdkVersion 22
         versionCode 6
-        versionName "1.5.2"
+        versionName "1.6.0"
     }
     buildTypes {
         release {
diff --git a/okhttputils/src/main/java/com/lzy/okhttputils/model/HttpHeaders.java b/okhttputils/src/main/java/com/lzy/okhttputils/model/HttpHeaders.java
index 52b15bd5..56cb0c70 100644
--- a/okhttputils/src/main/java/com/lzy/okhttputils/model/HttpHeaders.java
+++ b/okhttputils/src/main/java/com/lzy/okhttputils/model/HttpHeaders.java
@@ -152,6 +152,10 @@ public static String getCacheControl(String cacheControl, String pragma) {
         else return null;
     }
 
+    public static void setAcceptLanguage(String language) {
+        acceptLanguage = language;
+    }
+
     /**
      * Accept-Language: zh-CN,zh;q=0.8
      */
@@ -169,6 +173,10 @@ public static String getAcceptLanguage() {
         return acceptLanguage;
     }
 
+    public static void setUserAgent(String agent) {
+        userAgent = agent;
+    }
+
     /**
      * User-Agent: Mozilla/5.0 (Linux; U; Android 5.0.2; zh-cn; Redmi Note 3 Build/LRX22G) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Mobile Safari/537.36
      */
@@ -246,8 +254,6 @@ public static String formatMillisToGMT(long milliseconds) {
 
     @Override
     public String toString() {
-        return "HttpHeaders{" +
-                "headersMap=" + headersMap +
-                '}';
+        return "HttpHeaders{" + "headersMap=" + headersMap + '}';
     }
-}
+}
\ No newline at end of file
diff --git a/okhttputils/src/main/java/com/lzy/okhttputils/model/HttpParams.java b/okhttputils/src/main/java/com/lzy/okhttputils/model/HttpParams.java
index a14cec20..ffd32506 100644
--- a/okhttputils/src/main/java/com/lzy/okhttputils/model/HttpParams.java
+++ b/okhttputils/src/main/java/com/lzy/okhttputils/model/HttpParams.java
@@ -4,6 +4,8 @@
 import java.io.Serializable;
 import java.net.FileNameMap;
 import java.net.URLConnection;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.concurrent.ConcurrentHashMap;
 
 import okhttp3.MediaType;
@@ -13,17 +15,17 @@
  * 作    者：廖子尧
  * 版    本：1.0
  * 创建日期：2015/10/9
- * 描    述：请求参数的包装类
+ * 描    述：请求参数的包装类，支持一个key对应多个值
  * 修订历史：
  * ================================================
  */
 public class HttpParams implements Serializable {
 
     /** 普通的键值对参数 */
-    public ConcurrentHashMap<String, String> urlParamsMap;
+    public ConcurrentHashMap<String, List<String>> urlParamsMap;
 
     /** 文件的键值对参数 */
-    public ConcurrentHashMap<String, FileWrapper> fileParamsMap;
+    public ConcurrentHashMap<String, List<FileWrapper>> fileParamsMap;
 
     private void init() {
         urlParamsMap = new ConcurrentHashMap<>();
@@ -47,14 +49,26 @@ public HttpParams(String key, File file) {
     public void put(HttpParams params) {
         if (params != null) {
             if (params.urlParamsMap != null && !params.urlParamsMap.isEmpty()) urlParamsMap.putAll(params.urlParamsMap);
-            if (params.fileParamsMap != null && !params.fileParamsMap.isEmpty())
-                fileParamsMap.putAll(params.fileParamsMap);
+            if (params.fileParamsMap != null && !params.fileParamsMap.isEmpty()) fileParamsMap.putAll(params.fileParamsMap);
         }
     }
 
     public void put(String key, String value) {
         if (key != null && value != null) {
-            urlParamsMap.put(key, value);
+            List<String> urlValues = urlParamsMap.get(key);
+            if (urlValues == null) {
+                urlValues = new ArrayList<>();
+                urlParamsMap.put(key, urlValues);
+            }
+            urlValues.add(value);
+        }
+    }
+
+    public void putUrlParams(String key, List<String> values) {
+        if (key != null && values != null && !values.isEmpty()) {
+            for (String value : values) {
+                put(key, value);
+            }
         }
     }
 
@@ -66,9 +80,36 @@ public void put(String key, File file, String fileName) {
         put(key, file, fileName, guessMimeType(fileName));
     }
 
+    public void put(String key, FileWrapper fileWrapper) {
+        if (key != null && fileWrapper != null) {
+            put(key, fileWrapper.file, fileWrapper.fileName, fileWrapper.contentType);
+        }
+    }
+
     public void put(String key, File file, String fileName, MediaType contentType) {
         if (key != null) {
-            fileParamsMap.put(key, new FileWrapper(file, fileName, contentType));
+            List<FileWrapper> fileWrappers = fileParamsMap.get(key);
+            if (fileWrappers == null) {
+                fileWrappers = new ArrayList<>();
+                fileParamsMap.put(key, fileWrappers);
+            }
+            fileWrappers.add(new FileWrapper(file, fileName, contentType));
+        }
+    }
+
+    public void putFileParams(String key, List<File> files) {
+        if (key != null && files != null && !files.isEmpty()) {
+            for (File file : files) {
+                put(key, file);
+            }
+        }
+    }
+
+    public void putFileWrapperParams(String key, List<FileWrapper> fileWrappers) {
+        if (key != null && fileWrappers != null && !fileWrappers.isEmpty()) {
+            for (FileWrapper fileWrapper : fileWrappers) {
+                put(key, fileWrapper);
+            }
         }
     }
 
@@ -117,16 +158,21 @@ public String getFileName() {
                 return "nofilename";
             }
         }
+
+        @Override
+        public String toString() {
+            return "FileWrapper{" + "file=" + file + ", fileName='" + fileName + ", contentType=" + contentType + ", fileSize=" + fileSize + '}';
+        }
     }
 
     @Override
     public String toString() {
         StringBuilder result = new StringBuilder();
-        for (ConcurrentHashMap.Entry<String, String> entry : urlParamsMap.entrySet()) {
+        for (ConcurrentHashMap.Entry<String, List<String>> entry : urlParamsMap.entrySet()) {
             if (result.length() > 0) result.append("&");
             result.append(entry.getKey()).append("=").append(entry.getValue());
         }
-        for (ConcurrentHashMap.Entry<String, FileWrapper> entry : fileParamsMap.entrySet()) {
+        for (ConcurrentHashMap.Entry<String, List<FileWrapper>> entry : fileParamsMap.entrySet()) {
             if (result.length() > 0) result.append("&");
             result.append(entry.getKey()).append("=").append(entry.getValue());
         }
diff --git a/okhttputils/src/main/java/com/lzy/okhttputils/request/BaseRequest.java b/okhttputils/src/main/java/com/lzy/okhttputils/request/BaseRequest.java
index 0f61c77d..b923087b 100644
--- a/okhttputils/src/main/java/com/lzy/okhttputils/request/BaseRequest.java
+++ b/okhttputils/src/main/java/com/lzy/okhttputils/request/BaseRequest.java
@@ -169,12 +169,30 @@ public R params(String key, String value) {
         return (R) this;
     }
 
+    @SuppressWarnings("unchecked")
+    public R addUrlParams(String key, List<String> values) {
+        params.putUrlParams(key, values);
+        return (R) this;
+    }
+
     @SuppressWarnings("unchecked")
     public R params(String key, File file) {
         params.put(key, file);
         return (R) this;
     }
 
+    @SuppressWarnings("unchecked")
+    public R addFileParams(String key, List<File> files) {
+        params.putFileParams(key, files);
+        return (R) this;
+    }
+
+    @SuppressWarnings("unchecked")
+    public R addFileWrapperParams(String key, List<HttpParams.FileWrapper> fileWrappers) {
+        params.putFileWrapperParams(key, fileWrappers);
+        return (R) this;
+    }
+
     @SuppressWarnings("unchecked")
     public R params(String key, File file, String fileName) {
         params.put(key, file, fileName);
@@ -240,15 +258,18 @@ public HttpHeaders getHeaders() {
     }
 
     /** 将传递进来的参数拼接成 url */
-    protected String createUrlFromParams(String url, Map<String, String> params) {
+    protected String createUrlFromParams(String url, Map<String, List<String>> params) {
         try {
             StringBuilder sb = new StringBuilder();
             sb.append(url);
             if (url.indexOf('&') > 0 || url.indexOf('?') > 0) sb.append("&");
             else sb.append("?");
-            for (Map.Entry<String, String> urlParams : params.entrySet()) {
-                String urlValue = URLEncoder.encode(urlParams.getValue(), "UTF-8");
-                sb.append(urlParams.getKey()).append("=").append(urlValue).append("&");
+            for (Map.Entry<String, List<String>> urlParams : params.entrySet()) {
+                List<String> urlValues = urlParams.getValue();
+                for (String value : urlValues) {
+                    String urlValue = URLEncoder.encode(value, "UTF-8");
+                    sb.append(urlParams.getKey()).append("=").append(urlValue).append("&");
+                }
             }
             sb.deleteCharAt(sb.length() - 1);
             return sb.toString();
@@ -279,7 +300,10 @@ protected RequestBody generateMultipartRequestBody() {
             //表单提交，没有文件
             FormBody.Builder bodyBuilder = new FormBody.Builder();
             for (String key : params.urlParamsMap.keySet()) {
-                bodyBuilder.add(key, params.urlParamsMap.get(key));
+                List<String> urlValues = params.urlParamsMap.get(key);
+                for (String value : urlValues) {
+                    bodyBuilder.add(key, value);
+                }
             }
             return bodyBuilder.build();
         } else {
@@ -287,14 +311,20 @@ protected RequestBody generateMultipartRequestBody() {
             MultipartBody.Builder multipartBodybuilder = new MultipartBody.Builder().setType(MultipartBody.FORM);
             //拼接键值对
             if (!params.urlParamsMap.isEmpty()) {
-                for (Map.Entry<String, String> entry : params.urlParamsMap.entrySet()) {
-                    multipartBodybuilder.addFormDataPart(entry.getKey(), entry.getValue());
+                for (Map.Entry<String, List<String>> entry : params.urlParamsMap.entrySet()) {
+                    List<String> urlValues = entry.getValue();
+                    for (String value : urlValues) {
+                        multipartBodybuilder.addFormDataPart(entry.getKey(), value);
+                    }
                 }
             }
             //拼接文件
-            for (Map.Entry<String, HttpParams.FileWrapper> entry : params.fileParamsMap.entrySet()) {
-                RequestBody fileBody = RequestBody.create(entry.getValue().contentType, entry.getValue().file);
-                multipartBodybuilder.addFormDataPart(entry.getKey(), entry.getValue().fileName, fileBody);
+            for (Map.Entry<String, List<HttpParams.FileWrapper>> entry : params.fileParamsMap.entrySet()) {
+                List<HttpParams.FileWrapper> fileValues = entry.getValue();
+                for (HttpParams.FileWrapper fileWrapper : fileValues) {
+                    RequestBody fileBody = RequestBody.create(fileWrapper.contentType, fileWrapper.file);
+                    multipartBodybuilder.addFormDataPart(entry.getKey(), fileWrapper.fileName, fileBody);
+                }
             }
             return multipartBodybuilder.build();
         }
diff --git a/okhttputils_v1.5.2.apk b/okhttputils_v1.5.2.apk
deleted file mode 100644
index 4a116eb9..00000000
Binary files a/okhttputils_v1.5.2.apk and /dev/null differ
diff --git a/okhttputils_v1.6.0.apk b/okhttputils_v1.6.0.apk
new file mode 100644
index 00000000..8a36bb9b
Binary files /dev/null and b/okhttputils_v1.6.0.apk differ