请求参数类型不一致导致后端无法接收请求异常：Did not find handler method for [/xxx]

1.问题描述：

前端页面携带参数发起ajax的GET请求，controller层用@ModelAttribute+对象接收，无法接收前端请求和参数；

2.异常信息：

2021-03-10 14:49:03.467 [http-nio-8082-exec-1] DEBUG [springfox.documentation.spring.web.PropertySourcedRequestMappingHandlerMapping] - Looking up handler method for path /xxx
2021-03-10 14:49:03.467 [http-nio-8082-exec-1] DEBUG [springfox.documentation.spring.web.PropertySourcedRequestMappingHandlerMapping] - looking up handler for path: /xxx
2021-03-10 14:49:03.475 [http-nio-8082-exec-1] DEBUG [springfox.documentation.spring.web.PropertySourcedRequestMappingHandlerMapping] - Did not find handler method for [/xxx]

3.请求URL:

http://localhost:9091/xxx?opCode=&processPid=&processStartUser=&processType=&processStartTime=&currentPage=1&hostId=&_=1615357331828

4.实体类：

    /**
     * 进程启动时间
     */
    @Column(name = "process_start_time")
    private Date processStartTime;

5.原因：

因为ajax的GET请求携带参数在url中，参数类型为字符串型，而后端接收的实体类字段processStartTime为Date类型，springMVC在接收参数时，无法将字符创型转换为Date类型，所以请求参数和接收参数不一致导致无法接收前端发起的请求

6.解决方法：

    /**
     * 进程启动时间
     */
    @Column(name = "process_start_time")
    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private Date processStartTime;