redirect java 配置_Java从后台重定向（redirect）到另一个项目的方法

(1)通过ModelAndView跳转

@RequestMapping("alipayforward")public ModelAndView alipayforward(HttpServletRequest req, HttpServletResponse resp) throwsException {

String contNo=req.getParameter("contNo");

logger.info("访问/downloadRequestElecCont.action");

String url= "redirect:http://baidu.com/downloadRequestElecCont.action?contNo="+contNo;return newModelAndView(url);

}

(2)通过HttpServletResponse跳转

@RequestMapping("alipayforward/{contNo}")public void alipayforward(@PathVariable("contNo") String contNo, HttpServletRequest req, HttpServletResponse resp) throwsException {//String contNo =req.getParameter("contNo");//保单号

logger.info("访问/downloadRequestElecCont.action");

resp.sendRedirect("http://baidu.com/downloadRequestElecCont.action?contNo="+contNo);

}

(3)通过redirect返回String类型跳转，注意这种方法不允许Spring控制器用@RestController注解，

因为@RestController相当于类中的所有方法都标注了@ResponseBody，这些方法不会返回一个视图，而是返回一个json对象，

这样的话只是在页面上打印出字符串，而不跳转。控制器用@Controller注解即可

@RequestMapping("alipayforward")public String alipayforward(@RequestParam("contNo") String contNo, HttpServletRequest req, HttpServletResponse resp) throwsException {//String contNo =req.getParameter("contNo");//保单号

logger.info("访问/downloadRequestElecCont.action");return "redirect:http://baidu.com/downloadRequestElecCont.action?contNo="+contNo;

}

下面是关于传参问题

重定向传参为get方式，如果传参数较多，可以封装到map或modelMap中

@RequestMapping(params = "action=alipayforward")publicString alipayforward(Map modelMap){

modelMap.put("userName", "呵呵");

modelMap.put("password", "123456");

modelMap.put("age", "25");return "redirect:http://localhost:8088/era/user/alipayforward4?modelMap="+modelMap;

}

另一个项目用实体类对象接收

@RequestMapping("alipayforward4")public void alipayforward4(User user, HttpServletRequest req) throwsException {

System.out.println(user.getPassword());