org.springframework.web.util.NestedServletException：请求处理失败

Question

我正在使用Spring jdbc模板进行CRUD。插入，选择和删除操作运行正常，但在更新过程中出现以下异常。

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [java.lang.Integer]: No default constructor found; nested exception is java.lang.NoSuchMethodException: java.lang.Integer.<init>()

这是我的控制器：

@RequestMapping(value="/editCompany/{companyId}", method= RequestMethod.GET)
    public String edit(@PathVariable(value="companyId")Integer companyId,ModelMap map) {

        Company company=companyService.get(companyId);
        map.addAttribute("company", company);
        map.put("companyId", companyId);
        return "editCompany"; 
    }

    @RequestMapping(value="/editCompany/{companyId}", method= RequestMethod.POST)
        public String save(@ModelAttribute("company")Integer companyId,Company company,BindingResult result, ModelMap map) {

        companyValidator.validate(company, result);
        if (result.hasErrors()) {
            return "editCompany";
        } else {
            Integer i=companyService.save(company);

            return "status";
        }
    }

我也@Autowired为控制器使用了注释。怎么解决呢？任何帮助都将受到赞赏。

Answer 1

我将Post方法更改为following并且它有效。

public String save(@ModelAttribute("company")Company company,BindingResult result, ModelMap map)