Question

我正在处理位置杂项应用程序，添加jchart api后，我的程序无法运行。我得到的最大错误是

require

我正在使用spring-tool-suite 4和msysql工作台作为数据库。我已经尽可能多地进行了自动接线，不确定在哪里存在编译错误。

疑似LocationController页面

Error creating bean with name 'locationController': 
    Unsatisfied dependency expressed through field 'service';" and "location is not mapped [select type, count(type) from location group by type]

详细错误

package com.bthompson.location.controllers;


import java.util.List;

import javax.servlet.ServletContext;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import com.bthompson.location.entities.Location;
import com.bthompson.location.repository.LocationRepository;
import com.bthompson.location.service.LocationService;
import com.bthompson.location.util.EmailUtil;
import com.bthompson.location.util.ReportUtil;

import org.springframework.web.bind.annotation.ModelAttribute;

@Controller
public class LocationController {

    @Autowired
    LocationService service;

    @Autowired
    LocationRepository repository;

    @Autowired
    ServletContext sc;

    @Autowired
    EmailUtil emailUtil;

    @Autowired
    ReportUtil reportUtil;

    @RequestMapping("/showCreate")
    public String showCreate() {
        return "createLocation";
    }

    @RequestMapping("/saveLoc")
    public String saveLocation(@ModelAttribute("location") Location location, ModelMap modelMap) {
        Location locationSaved = service.saveLocation(location);
        String msg = "Location saved with id: "+ locationSaved.getId();
        modelMap.addAttribute("msg", msg);
        emailUtil.sendEmail("javadevbernard@gmail.com", "Location Saved", "This response means that the location save/update was successful");
        return "createLocation";
    }

    @RequestMapping("/displayLocations")
    public String displayLocations(ModelMap modelMap) {

        List<Location> locations = service.getAllLocations();
        modelMap.addAttribute("locations", locations);
        return "displayLocations";
    }

    @RequestMapping("deleteLocation")
    public String deleteLocaation(@RequestParam("id") int id, ModelMap modelMap) {
        Location location = service.getLocationById(id);
        service.deleteLocation(location);
        List<Location> locations = service.getAllLocations();
        modelMap.addAttribute("locations", locations);
        return "displayLocations";
    }

    @RequestMapping("/showUpdate")
    public String showUpdate(@RequestParam("id") int id, ModelMap modelMap) {
        Location location = service.getLocationById(id);
        modelMap.addAttribute("location", location);
        return "updateLocation";
    }

    @RequestMapping("/updateLoc")
    public String updateLocation(@ModelAttribute("location") Location location, ModelMap modelMap) {
        service.updateLocation(location);
        List<Location> locations = service.getAllLocations();
        modelMap.addAttribute("locations", locations);
        return "displayLocations";
    }

    @RequestMapping("/generateReport")
    public String generateReport() {
        String path = sc.getRealPath("/");
        List<Object[]> data = repository.findTypeAndTypeCount();
        reportUtil.generatePieChart(path, data);
        return "report";

    }

}

我希望信息可以转换为通过应用程序显示的图像。但是我遇到了编译错误。

Answer 1

我查看了我的实体.Location文件，但尚未看到需要添加的内容，请查看我的代码。

package com.bthompson.location.entities;

import javax.persistence.Entity;
import javax.persistence.Id;

@Entity
public class Location {
    @Id
    private int id;
    private String name;
    private String code;
    private String type;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    @Override
    public String toString() {
        return "Location [id=" + id + ", name=" + name + ", code=" + code + ", type=" + type + "]";
    }



}

通过字段和映射问题表达的不满意依赖性

1 个答案: