本文实例讲述了java实现响应重定向发送post请求操作。分享给大家供大家参考,具体如下:
关于重定向我们用的比较多的还是redirect:重定向,默认发送的get请求。
return "redirect:/index";
但有时候请求地址必须为post请求,比如security登录就只能接收post请求,下面来看一下如何后台如何发送post请求响应重定向。
首先可以定义一个map,用于存放参数键值对
Map parameter = new HashMap();
添加参数方法
public void setParameter(String key, String value) {
this.parameter.put(key, value);
}
发送请求代码:
//url参数为请求地址
public void sendByPost(String url) throws IOException {
this.response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
PrintWriter out = this.response.getWriter();
out.println(""-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("");
out.println("
");
out.println(" ");
out.println("
loading");
out.println(" \n");
out.println(" ");
out.println("
");
out.println("
");
Iterator it = this.parameter.keySet().iterator();
while (it.hasNext()) {
String key = it.next();
out.println("");
}
out.println("");
out.println(" ");
out.println(" ");
out.println("");
out.flush();
out.close();
}
RedirectWithPost请求类全部代码
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
/**
* 用POST方式 重定向
*
* @author royFly
*/
public class RedirectWithPost {
Map parameter = new HashMap();
HttpServletResponse response;
public RedirectWithPost(HttpServletResponse response) {
this.response = response;
}
public void setParameter(String key, String value) {
this.parameter.put(key, value);
}
public void sendByPost(String url) throws IOException {
this.response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
PrintWriter out = this.response.getWriter();
out.println(""-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("");
out.println("
");
out.println(" ");
out.println("
loading");
out.println(" \n");
out.println(" ");
out.println("
");
out.println("
");
Iterator it = this.parameter.keySet().iterator();
while (it.hasNext()) {
String key = it.next();
out.println("");
}
out.println("");
out.println(" ");
out.println(" ");
out.println("");
out.flush();
out.close();
}
}
实例化RedirectWithPost请求类
RedirectWithPost redirectWithPost = new RedirectWithPost(response);
//redirectUrl请求地址
String redirectUrl = "/login";
添加请求参数
redirectWithPost.setParameter("username", nickname);
redirectWithPost.setParameter("password", openid);
调用方法,发送请求
redirectWithPost.sendByPost(redirectUrl);
希望本文所述对大家java程序设计有所帮助。