HttpClient 登陆后，进展访问数据

HttpClient 登陆后，进行访问数据

?

package com.ch2;

import java.io.ByteArrayInputStream;
import java.io.InputStream;

import org.apache.commons.httpclient.Cookie;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.cookie.CookiePolicy;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.io.IOUtils;

public class HttpClientLogin {

??? public static void main(String[] args){
??????? //登陆 Url
??????? String loginUrl = "http://localhost:8080/test/web/login.do";
?
??????? //需登陆后访问的 Url
??????? String dataUrl = "http://localhost:8080/test/web/getWorklist.do";
?
??????? HttpClient httpClient = new HttpClient();
?
??????? //模拟登陆，按实际服务器端要求选用 Post 或 Get 请求方式
??????? PostMethod postMethod = new PostMethod(loginUrl);
?
??????? //设置登陆时要求的信息，一般就用户名和密码，验证码自己处理了
??????? NameValuePair[] data = {
??????????????? new NameValuePair("name", "aa"),
??????????????? new NameValuePair("password", "password")
??????? };
??????? //{??? "name": "aa", ??? "password": "password"}
??????? //postMethod.setRequestBody(data);
?
????? //向服务器写json
??????? String json="{"name": "aa", ??? "password": "password"}";
??????? InputStream?? inputStream?? =?? new?? ByteArrayInputStream(json.getBytes());
??????? postMethod.setRequestBody(inputStream);
??????? try {
??????????? //设置 HttpClient 接收 Cookie,用与浏览器一样的策略
??????????? httpClient.getParams().setCookiePolicy(CookiePolicy.BROWSER_COMPATIBILITY);
??????????? httpClient.executeMethod(postMethod);
?
??????????? //获得登陆后的 Cookie
??????????? Cookie[] cookies=httpClient.getState().getCookies();
??????????? String tmpcookies= "";
??????????? for(Cookie c:cookies){
??????????????? tmpcookies += c.toString()+";";
??????????? }
?
??????????? //进行登陆后的操作
??????????? PostMethod getMethod = new UTF8PostMethod(dataUrl);
?
??????????? //每次访问需授权的网址时需带上前面的 cookie 作为通行证
??????????? getMethod.setRequestHeader("cookie",tmpcookies);
?
??????????? //你还可以通过 PostMethod/GetMethod 设置更多的请求后数据
??????????? //例如，referer 从哪里来的，UA 像搜索引擎都会表名自己是谁，无良搜索引擎除外
??????????? postMethod.setRequestHeader("Referer", "http://unmi.cc");
??????????? postMethod.setRequestHeader("User-Agent","Unmi Spot");
?
??????????? httpClient.executeMethod(getMethod);
?
??????????? //打印出返回数据，检验一下是否成功
??????????? InputStream in=getMethod.getResponseBodyAsStream();
??????????? //System.out.println(IOUtils.toString(in,"UTF-8"));

??????????? String a=IOUtils.toString(in,"UTF-8");
??????????? System.out.println(a);
??????? } catch (Exception e) {
??????????? e.printStackTrace();
??????? }??
??? }
???
??? private static class UTF8PostMethod extends PostMethod{
??????? public UTF8PostMethod(String url){
??????????? super(url);
??????? }
???????
??????? @Override
??????? public String getRequestCharSet() {
??????????? //return super.getRequestCharSet();
??????????? return "UTF-8";
??????? }
??? }
}