本文共 6363 字，大约阅读时间需要 21 分钟。

本文使用的是httpClient实现发送key_value参数、json参数，上传单个文件，上传多个文件的功能，是目前市面上很多网络请求封装工具类的实现原理。

PostActivity：

import java.io.File;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Map.Entry;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.StringEntity;import org.apache.http.entity.mime.MultipartEntity;import org.apache.http.entity.mime.content.ContentBody;import org.apache.http.entity.mime.content.FileBody;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;/** * @author CSDN_LQR * @工程 7ZipDemo  * @包名 com.lqr.zipdemo * @TODO 使用httpClient实现发再key_value参数、json参数、上传多个文件 */public class PostActivity extends Activity {
       @Override    protected void onCreate(Bundle savedInstanceState) {        // TODO        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_post);        /* =============== post key_value =============== */        findViewById(R.id.btnKeyValue).setOnClickListener(                new OnClickListener() {                    @Override                    public void onClick(View v) {                        HashMap
   
     params = new HashMap
    
     ();                        params.put("name", "SCDN_LQR");                        // 发送key_value形式的post请求                        postKeyValue(params);                    }                });        /* =============== post key_jsonString=============== */        findViewById(R.id.btnJsonString).setOnClickListener(                new OnClickListener() {                    @Override                    public void onClick(View v) {                        String jsonString = "{\"name\":\"CSDN_LQR\"}";                        postJsonString(jsonString);                    }                });        /* =============== post key_File 单张图片=============== */        findViewById(R.id.btnSingleFile).setOnClickListener(                new OnClickListener() {                    @Override                    public void onClick(View v) {                        File file = new File("c:/a.txt");                        postSingleFile(file);                    }                });        /* =============== post key_File 多张图片=============== */        findViewById(R.id.btnMultFile).setOnClickListener(                new OnClickListener() {                    @Override                    public void onClick(View v) {                        Map
     
       fileMap = new HashMap
      
       ();                        File actimgFile = null;                        File listimgFile = null;                        fileMap.put("actimg", actimgFile);                        fileMap.put("listimg", listimgFile);                        postMultFile(fileMap);                    }                });    }    /**     * 发送多个文件，需要httpmime.jar的支持     *      * @param fileMap     */    private void postMultFile(final Map
       
         fileMap) {        new Thread(new Runnable() {            @Override            public void run() {                try {                    DefaultHttpClient httpClient = new DefaultHttpClient();                    HttpPost post = new HttpPost("http://httpbin.org/post");                    // 提交文件类型的参数                    MultipartEntity entity = new MultipartEntity();                    for (Map.Entry
        
          info : fileMap.entrySet()) { File file = info.getValue(); String key = info.getKey(); ContentBody contentBody = new FileBody(file); entity.addPart(key, contentBody); } post.setEntity(entity); HttpResponse response = httpClient.execute(post); if (response.getStatusLine().getStatusCode() == 200) { HttpEntity resEntity = response.getEntity(); String result = EntityUtils.toString(resEntity); System.out.println("result:" + result); } } catch (Exception e) { e.printStackTrace(); } } }).start(); } /** * 发送单个文件，需要httpmime.jar的支持 * * @param file */ private void postSingleFile(final File file) { new Thread(new Runnable() { @Override public void run() { try { DefaultHttpClient httpClient = new DefaultHttpClient(); HttpPost post = new HttpPost("http://httpbin.org/post"); // 提交文件类型的参数 MultipartEntity entity = new MultipartEntity(); ContentBody contentBody = new FileBody(file); entity.addPart("actimg", contentBody); post.setEntity(entity); HttpResponse response = httpClient.execute(post); if (response.getStatusLine().getStatusCode() == 200) { HttpEntity resEntity = response.getEntity(); String result = EntityUtils.toString(resEntity); System.out.println("result:" + result); } } catch (Exception e) { e.printStackTrace(); } } }).start(); } /** * 发送json形式的post请求 * * @param jsonString */ private void postJsonString(final String jsonString) { new Thread() { public void run() { try { DefaultHttpClient client = new DefaultHttpClient(); HttpPost post = new HttpPost("http://httpbin.org/post"); // 提交表单类型的参数 post.setEntity(new StringEntity(jsonString)); HttpResponse response = client.execute(post); if (response.getStatusLine().getStatusCode() == 200) { HttpEntity entity = response.getEntity(); System.out.println(EntityUtils.toString(entity)); } } catch (Exception e) { // TODO e.printStackTrace(); } }; }.start(); } /** * 发送key_value形式的post请求 * * @param paramsMap */ private void postKeyValue(final Map
         
           paramsMap) { new Thread() { public void run() { try { DefaultHttpClient client = new DefaultHttpClient(); HttpPost post = new HttpPost("http://httpbin.org/post"); List
          
            parameters = new ArrayList
           
            (); for (Entry
            
              entry : paramsMap.entrySet()) { BasicNameValuePair basicNameValuePair = new BasicNameValuePair( entry.getKey(), entry.getValue()); parameters.add(basicNameValuePair); } UrlEncodedFormEntity reqEntity = new UrlEncodedFormEntity( parameters); // 提交表单类型的参数 post.setEntity(reqEntity); HttpResponse response = client.execute(post); if (response.getStatusLine().getStatusCode() == 200) { HttpEntity resEntity = response.getEntity(); System.out.println(EntityUtils.toString(resEntity)); } } catch (Exception e) { // TODO e.printStackTrace(); } }; }.start(); }}
            
           
          
         
        
       
      
     
    
   

activity_post.xml:

转载地址：https://linqiarui.blog.csdn.net/article/details/51297777 如侵犯您的版权，请留言回复原文章的地址，我们会给您删除此文章，给您带来不便请您谅解！