彩虹过后的羽翼 通过本文主要向大家介绍了java redirect,java redirect用法,java sendredirect,java中redirect,java 获得redirect等相关知识,希望对您有所帮助,也希望大家支持linkedu.com www.linkedu.com
（1）通过ModelAndView跳转
@RequestMapping("alipayforward")
public ModelAndView alipayforward(HttpServletRequest req, HttpServletResponse resp) throws Exception {
String contNo =req.getParameter("contNo");
logger.info("访问/downloadRequestElecCont.action");
String url = "redirect:http://baidu.com/downloadRequestElecCont.action?contNo="+contNo;
return new ModelAndView(url);
}
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（2）通过HttpServletResponse跳转
@RequestMapping("alipayforward/{contNo}")
public void alipayforward(@PathVariable("contNo") String contNo, HttpServletRequest req, HttpServletResponse resp) throws Exception {
//String contNo =req.getParameter("contNo"); //保单号
logger.info("访问/downloadRequestElecCont.action");
resp.sendRedirect("http://baidu.com/downloadRequestElecCont.action?contNo="+contNo);
}
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（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) throws Exception {
//String contNo =req.getParameter("contNo"); //保单号
logger.info("访问/downloadRequestElecCont.action");
return "redirect:http://baidu.com/downloadRequestElecCont.action?contNo="+contNo;
}
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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")
public String 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;
}
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另一个项目用实体类对象接收
@RequestMapping("alipayforward4")
public void alipayforward4(User user, HttpServletRequest req) throws Exception {
System.out.println(user.getPassword());
String modelMap = req.getParameter("modelMap");
System.out.println(modelMap);
}
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
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