java - 从 Java Controller 启动 html 页面时添加查询字符串值

Question

我有一个 HTML 页面，在发布后从 java Controller 启动，我想在 url ex 中附加一个查询字符串值:(localhost:8000/gdata?id=11)。这可以做到吗？这是我的 Controller 代码:

package com.sa.example;

import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
//import org.springframework.web.bind.annotation.RequestParam;

import com.sentinel.advisor.GData;
import com.sentinel.advisor.GDataJdbcRepository;

@Controller
public class GDataController {

    @Autowired
    GDataJdbcRepository repository;

    @GetMapping("/gdata")
    public String gDataForm(Model model) {
        return "gData";
    }

    @PostMapping("/gdata")
    public String gDataSubmit(@ModelAttribute GData gData) {
        String returnString = repository.insert(gData);
        //returnString should be returned in the url as a query string
        return "result";
    }

}

Answer 1

您可以使用重定向(最好的做法是在发布后重定向，无论看到 - https://en.wikipedia.org/wiki/Post/Redirect/Get 。

Spring 的重定向 View :

https://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/servlet/view/RedirectView.html

类似于:

@Controller
public class GDataController {

    @Autowired
    GDataJdbcRepository repository;

    @GetMapping("/gdata")
    public String gDataForm(Model model) {
        return "gData";
    }

    @PostMapping("/gdata")
    public RedirectView gDataSubmit(@ModelAttribute GData gData) {
        String returnString = repository.insert(gData);
        return new RedirectView("/sucess?returnString=" + returnString, true);
    }

    @GetMapping("/success")
    public String getResultPage(@RequestParam("returnString")String returnString){
        return "result";
    }
}