问题是这样的，我用eclipse发送httpclient请求如下没有问题，但是在idea中就返回400，为毛呢？？？excuse me?

package com.vol.timingTasks;


import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

/**
 * 数据抽取测试类
 *
 * @author xbx
 *
 */
public class XBXmain {
    private final static String ENCODE = "utf-8";

    public static void main(String[] args) throws Exception {
		getDataA();
    }


    /*
     * Basic验证
     * 用户名：
     * 密钥：
     */
    public static void getDataA() throws  Exception{
        HttpResponse httpResponse = null;
        HttpClient httpClient = new DefaultHttpClient();
        String projectName = "中科洛阳信息产业园项目(一期)";
        String url = "http://labour.ztjs.cn/clound/wsForThird/laboursByProjectName/"+projectName ;
        HttpGet get = new HttpGet(url);
        try {

            // 创建HttpClientBuilder
            HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
            // 设置BasicAuth
            CredentialsProvider provider = new BasicCredentialsProvider();
            // Create the authentication scope
            AuthScope scope = new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT, AuthScope.ANY_REALM);
            // Create credential pair，在此处填写用户名和密码
            UsernamePasswordCredentials credentials = new UsernamePasswordCredentials("", "");
            // Inject the credentials
            provider.setCredentials(scope, credentials);
            // Set the default credentials provider
            httpClientBuilder.setDefaultCredentialsProvider(provider);
            // HttpClient
            CloseableHttpClient closeableHttpClient = httpClientBuilder.build();


            httpResponse = closeableHttpClient.execute(get);
            HttpEntity httpEntity = httpResponse.getEntity();
            String httpResult = EntityUtils.toString(httpEntity);
            String httpResult2 = EntityUtils.toString(httpEntity);
        } catch (IOException e) {
        }

    }



}

把 访问地址：http://labour.ztjs.cn/clound/wsForThird/laboursByProjectName/中科洛阳信息产业园项目(一期)

放在谷歌浏览器，然后再复制出来，发现汉字编码格式变了。ok，那就先转换下编码格式再发送请求。  修改后代码如下：

package com.vol.timingTasks;


import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

/**
 * 数据抽取测试类
 *
 * @author xbx
 *
 */
public class XBXmain {
    private final static String ENCODE = "utf-8";

    public static void main(String[] args) throws Exception {
		getDataA();
    }


    /*
     * Basic验证
     * 用户名：
     * 密钥：
     */
    public static void getDataA() throws  Exception{
        HttpResponse httpResponse = null;
        HttpClient httpClient = new DefaultHttpClient();
        String projectName = "中科洛阳信息产业园项目(一期)";
        String url = "http://labour.ztjs.cn/clound/wsForThird/laboursByProjectName/"+java.net.URLEncoder.encode(projectName, ENCODE);//URL  中文 转码
        HttpGet get = new HttpGet(url);
        try {

            // 创建HttpClientBuilder
            HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
            // 设置BasicAuth
            CredentialsProvider provider = new BasicCredentialsProvider();
            // Create the authentication scope
            AuthScope scope = new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT, AuthScope.ANY_REALM);
            // Create credential pair，在此处填写用户名和密码
            UsernamePasswordCredentials credentials = new UsernamePasswordCredentials("", "");
            // Inject the credentials
            provider.setCredentials(scope, credentials);
            // Set the default credentials provider
            httpClientBuilder.setDefaultCredentialsProvider(provider);
            // HttpClient
            CloseableHttpClient closeableHttpClient = httpClientBuilder.build();


            httpResponse = closeableHttpClient.execute(get);
            HttpEntity httpEntity = httpResponse.getEntity();
            String httpResult = EntityUtils.toString(httpEntity);
            String httpResult2 = EntityUtils.toString(httpEntity);
        } catch (IOException e) {
        }

    }



}

再试试，请求成功，只需要转下编码：

String url = "http://labour.ztjs.cn/clound/wsForThird/laboursByProjectName/"+java.net.URLEncoder.encode(projectName, ENCODE);//URL  中文 转码