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   源码介绍

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java模仿http表单提交数据、模仿http表单上传文件示例

package com.snca.cloudsign.main;

import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;

import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class CloudSignRestUtil {
    
    /**
     * 正常数据请求
     * @param url
     * @param data
     * @return
     */
    public static String commDataRequest(String url,String data)throws ClientProtocolException,ParseException,IOException{
        HttpPost httpPost = new HttpPost(url);
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        httpClient = HttpClients.createDefault();
        HttpEntity entity = new StringEntity(data,Consts.UTF_8);
        httpPost.setEntity(entity);
        httpPost.addHeader("Content-Type", "application/json");
        httpPost.setEntity(entity);
        try {
            response = httpClient.execute(httpPost);
            return EntityUtils.toString(response.getEntity(),Charset.forName("UTF-8"));
        }finally {
                if(response != null){
                    response.close();
                }
                if(httpClient != null){
                    httpClient.close();
                }
        }
    }
    
    /**
     * 带文件的数据接口请求
     * @param url
     * @param data
     * @return
     */
    public static String fileDataRequest(String url,String data,File pdfFile)throws ClientProtocolException,ParseException,IOException{
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        try{
            httpClient = HttpClients.createDefault();
            StringBody requestData = new StringBody(data, ContentType.create(
                    "text/plain", Consts.UTF_8));
            FileBody bin = new FileBody(pdfFile);
            HttpEntity entity = MultipartEntityBuilder.create()
                    .addPart("pdfFile", bin)
                    .addPart("requestData", requestData)
                    .build();
            HttpPost httpPost = new HttpPost(url);
            httpPost.setEntity(entity);
            // 发起请求 并返回请求的响应
            response = httpClient.execute(httpPost);
            // 获取响应对象
            HttpEntity resEntity = response.getEntity();
            String responseStr =  EntityUtils.toString(response.getEntity(),Charset.forName("UTF-8"));
            // 销毁
            EntityUtils.consume(resEntity);
            return responseStr;
      }finally {
            if(response != null){
                response.close();
            }
            if(httpClient != null){
                httpClient.close();
            }
      }
    }
    
}