文章目录
- 一、环境说明
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-
- 1、在gradle中引入依赖
- 2、AndroidManifest中开启网络权限
- 3、搭建测试接口
- 4、编写OkHttp工具类
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- 二、发送请求
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- 1.发送无参的Get请求
- 2.发送有参的Get请求
- 3.发送无参Post请求
- 4.发送有参Pos请求
- 5.发送Post 的Json数据
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一、环境说明
1、在gradle中引入依赖
1 implementation 'com.squareup.okhttp3:okhttp:3.12.1' 2 debugImplementation 'com.squareup.okhttp3:logging-interceptor:3.12.1'
2、AndroidManifest中开启网络权限
<uses-permission android:name="android.permission.INTERNET"/>
注意:
在android9.0以后,Android默认禁止使用Http协议，必须使用Https协议，否则会报错误。
所以要使用Http协议的请求必须在AndroidManifest中添加属性,android:usesCleartextTraffic=“true”
3、搭建测试接口
1package com.icodingzy.androidback.controller; 2 3import com.icodingzy.androidback.pojo.User; 4import org.springframework.web.bind.annotation.*; 5 6@RestController 7@RequestMapping("user") 8public class UserController { 9 10 11 /** 12 * GET NoParameter 13 * @return 14 */ 15 @GetMapping("getUser") 16 public Object getUser() { 17 18 19 User user = new User(); 20 user.setId((int) (Math.random()*100)); 21 user.setName("熊顺"); 22 user.setStudentId("201815110110" + (int) (Math.random()*100)); 23 user.setSex("男"); 24 user.setData("Not have Parameter!"); 25 return user; 26 } 27 28 /** 29 * GET TakeParameter 30 * @param id userId 31 * @return 32 */ 33 @GetMapping("getParamUser") 34 public Object getParamUser(Integer id){ 35 36 37 User user = new User(); 38 user.setId(id); 39 user.setName("熊顺"); 40 user.setStudentId("201815110110" + (int) (Math.random()*100)); 41 user.setSex("男"); 42 user.setData("parameter is " + id); 43 return user; 44 } 45 /** 46 * Post NoParameter 47 * @return 48 */ 49 @PostMapping("postNoParamUser") 50 public Object postNoParamUser(){ 51 52 53 User user = new User(); 54 user.setId((int) (Math.random()*100)); 55 user.setName("熊顺"); 56 user.setStudentId("201815110110" + (int) (Math.random()*100)); 57 user.setSex("男"); 58 user.setData("Not have parameter"); 59 return user; 60 } 61 /** 62 * Post TakeParameter 63 * @param id userId 64 * @return 65 */ 66 @PostMapping("postParamUser") 67 public Object postParamUser(Integer id){ 68 69 70 User user = new User(); 71 user.setId(id); 72 user.setName("熊顺"); 73 user.setStudentId("201815110110" + (int) (Math.random()*100)); 74 user.setSex("男"); 75 user.setData("parameter is " + id); 76 return user; 77 } 78 /** 79 * Post ObjectParameter 80 * @return 81 */ 82 @PostMapping("postObjectParamUser") 83 public Object postObjectParamUser(@RequestBody User user){ 84 85 86 return user; 87 } 88}
接口文档
说明
请求方式
请求参数
请求地址
GET 方式，无参数
GET
无
/user/getUser
GET方式，Int参数
GET
Int(id)
/user/getParamUser
Post方式，无参数
POST
无
/user/postNoParamUser
Post方式，有参数
POST
Int(id)
/user/postParamUser
Post方式，Json化参数
POST
Object(id，name，sex，studentId，sex，data)
/user/postObjectParamUser
4、编写OkHttp工具类
1package com.zhuoyue.travelwh.OkHttpUtil; 2 3 4import android.app.ProgressDialog; 5import android.content.Context; 6import android.util.Log; 7 8 9import com.zhuoyue.travelwh.bean.MsgBean; 10 11import org.greenrobot.eventbus.EventBus; 12 13import java.io.IOException; 14 15import okhttp3.Call; 16import okhttp3.Callback; 17import okhttp3.OkHttpClient; 18import okhttp3.Request; 19import okhttp3.RequestBody; 20import okhttp3.Response; 21 22public class OkHttpUtil { 23 24 25 public static ProgressDialog dialog; 26 27 /** 28 * 发送网络请求 29 * @param url 请求Url 30 * @param context 上下文对象 31 * @param body 请求体，如果有请求体则发送Post请求，反之发送Get请求 32 */ 33 public static void getHttpRequset(String url, Context context, RequestBody body) { 34 35 36 startDialog(context); 37 OkHttpClient client = new OkHttpClient(); 38 39 Request request = null; 40 41 //Post请求 42 if (body != null) { 43 44 45 request = new Request.Builder() 46 .url(url) 47 .post(body) 48 .build(); 49 } else { 50 51 52 //Get请求 53 request = new Request.Builder() 54 .url(url) 55 .get() 56 .build(); 57 } 58 59 client.newCall(request).enqueue(new Callback() { 60 61 62 /*请求失败时的回调*/ 63 @Override 64 public void onFailure(Call call, IOException e) { 65 66 67 stopDialog(); 68 Log.e("onFailure: ", e.getMessage()); 69 } 70 /*请求成功时的回调*/ 71 @Override 72 public void onResponse(Call call, Response response) throws IOException { 73 74 75 stopDialog(); 76 Log.e("ApiData:", response.body().string()); 77 } 78 }); 79 } 80 81 /** 82 * 显示等待框 83 * @param context 84 */ 85 public static void startDialog(Context context) { 86 87 88 dialog = new ProgressDialog(context); 89 dialog.setMessage("数据加载。。。"); 90 dialog.setTitle("请稍后"); 91 dialog.setCanceledOnTouchOutside(false); 92 dialog.show(); 93 } 94 95 /** 96 * 关闭等待框 97 */ 98 public static void stopDialog() { 99 100 101 if (dialog != null) { 102 103 104 105 dialog.dismiss(); 106 } 107 } 108} 109
二、发送请求
1.发送无参的Get请求
在自己的业务中使用工具类发送网络请求
1 //无参接口 2 private final String url = "http://xxxxxx/user/getParamUser"; 3 @Override 4 protected void onCreate(Bundle savedInstanceState) { 5 6 7 super.onCreate(savedInstanceState); 8 setContentView(R.layout.activity_main); 9 10 OkHttpUtil.getHttpRequset(url,this,null); 11 }
打印结果如下
E/ApiData:: {“id”:82,“name”:“熊顺”,“studentId”:“20181511011066”,“sex”:“男”,“data”:“Not have Parameter!”}
2.发送有参的Get请求
OkHttp发送Get请求时，请求参数全部放在url中
1//有参Get接口 2 private final String url = "http://xxxxxx/user/getParamUser"; 3 @Override 4 protected void onCreate(Bundle savedInstanceState) { 5 6 7 super.onCreate(savedInstanceState); 8 setContentView(R.layout.activity_main); 9 10 OkHttpUtil.getHttpRequset(url + "?id=9999",this,null); 11 }
3.发送无参Post请求
发送Post请求时必需要带上请求体
1//无参Post接口 2 private final String url = "http://xxxxxx/user/postNoParamUser"; 3 @Override 4 protected void onCreate(Bundle savedInstanceState) { 5 6 7 super.onCreate(savedInstanceState); 8 setContentView(R.layout.activity_main); 9 10 RequestBody body = new FormBody.Builder() 11 .build(); 12 OkHttpUtil.getHttpRequset(url, this, body); 13 }
4.发送有参Pos请求
add中固定为String类型
1//有参Post接口 2 private final String url = "http://xxxxxx/user/postParamUser"; 3 @Override 4 protected void onCreate(Bundle savedInstanceState) { 5 6 7 super.onCreate(savedInstanceState); 8 setContentView(R.layout.activity_main); 9 10 RequestBody body = new FormBody.Builder() 11 .add("id","8888") 12 .build(); 13 OkHttpUtil.getHttpRequset(url, this, body); 14 }
5.发送Post 的Json数据
发送Json数据需要借助JSONObject，把数据转换成Json格式
1//Json化参数Post接口 2 private final String url = "http://xxxxxx/user/postObjectParamUser"; 3 @Override 4 protected void onCreate(Bundle savedInstanceState) { 5 6 7 super.onCreate(savedInstanceState); 8 setContentView(R.layout.activity_main); 9 10 JSONObject jsonObject = new JSONObject(); 11 try { 12 13 14 jsonObject.put("id",1111111); 15 jsonObject.put("name","顺"); 16 jsonObject.put("studentId","123123"); 17 jsonObject.put("sex","小萌新"); 18 jsonObject.put("data","I have pan"); 19 } catch (JSONException e) { 20 21 22 e.printStackTrace(); 23 } 24 RequestBody body = FormBody.create(MediaType.parse("application/json;charset=utf-8"), jsonObject.toString()); 25 26 OkHttpUtil.getHttpRequset(url, this, body); 27 }
