微信返回字符串 redirect:http://.... 无跳转微信授权。

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);

  }

 

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);

  }

 

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;

  }