响应已经提交。无法将响应发送到另一个 URL答案

【问题标题】：The response has been already committed. Could not send the response to another URL响应已经提交。无法将响应发送到另一个 URL
【发布时间】：2018-11-30 21:40:24
【问题描述】：

我在我的 spring mvc 应用程序中使用 spring security 4.2.3.RELEASE。我有登录成功处理程序来处理成功认证后的操作。

这是我的 LoginSuccessHandler.java

package com.application.security;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;

import com.application.util.CommonUtils;


@PropertySource(value = { "classpath:application.properties" })
public class LoginSuccessHandler extends SavedRequestAwareAuthenticationSuccessHandler {
	
	private final static Logger logger = Logger.getLogger(LoginSuccessHandler.class); 
	
	@Autowired
    Environment environment;
	
	@Autowired
    CommonUtils commonUtils;
	
	@Override
    public void onAuthenticationSuccess(
            HttpServletRequest request,
            HttpServletResponse response,
            Authentication authentication) throws ServletException, IOException {
		int sessionTimeOut = Integer.parseInt(environment.getRequiredProperty("server.session.timeout").toString().trim());
        request.getSession().setMaxInactiveInterval(sessionTimeOut);
        super.onAuthenticationSuccess(request, response, authentication);
		CustomUser user = commonUtils.getLoggedInUserDetails();
		if(user != null) {
			if(!user.isPasswordReset()) {
			response.sendRedirect("changePassword");	
			}
		}
		logger.info("Successfully LoggedIn......");
		
    }
}

一切正常，直到行
response.sendRedirect("changePassword"); 执行。此行正在生成以下错误。

java.lang.IllegalStateException: 响应提交后无法调用 sendRedirect()

我知道应用调用super.onAuthenticationSuccess(request, response, authentication);时响应已经提交

我需要重写这个超类来解决这个问题吗？还是有其他想法？

【问题讨论】：

标签： java spring spring-mvc spring-security

【解决方案1】：

这是因为super.onAuthenticationSuccess(request, response, authentication);已经提交了响应

但是你使用response.sendRedirect("changePassword");的时间已经发送响应了。

见this for more info

注意：这一行应该是方法super.onAuthenticationSuccess(request, response, authentication);的最后一行

【讨论】：