今天在实现一个跳转功能时发现参数太长了，用redirect无法实现，想改成post提交参数。java自身的api貌似无法实现，最后查到可以用模拟一个表单提交参数的方式实现。
代码如下：
增加http请求工具类
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;
/**
* Created by crimson.
*/
public class HttpClientUtil {
Map parameter=new HashMap<>();
HttpServletResponse response;
public HttpClientUtil(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");
PrintWriter out = this.response.getWriter();
out.println(""-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("");
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();
}
}
调用处：
HttpClientUtil http=new HttpClientUtil (response);
http.setParameter("key", "value");
http.sendByPost(url);