SpringMvc receives date form submission and automatically converts it into Date type method

User has the birthday (Date) attribute. When the user registers, just select the date and then submit the form. Spring mvc will report an error. 400 Bad Request means that the string cannot be converted to Date type.

• Add date formatting annotation to the entity class

    @DateTimeFormat(pattern = "yyyy-MM-dd")  
    private Date birthday;

• Add a data binding to the controller Define the code

    //将字符串转换为Date类
    @InitBinder
    public void initBinder(WebDataBinder binder, WebRequest request) {
        //转换日期格式
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        // 注册自定义的编辑器
        binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
        
    }

• Method 3: Implement a global date type converter and configure it

package nuc.ss.wlb.core.web;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.support.WebBindingInitializer;
import org.springframework.web.context.request.WebRequest;

public class CustomDateEdtor implements WebBindingInitializer {

    
    public void initBinder(WebDataBinder binder, WebRequest request) {
        // TODO Auto-generated method stub
        //转换日期格式
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        
        binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
    }

}

//并在spingMVC配置文件进行配置

<!-- 配置全局日期转换器 -->
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="webBindingInitializer">    
            <bean class="nuc.ss.wlb.core.web.CustomDateEdtor"/>
        </property>
    </bean>

• Method 4: jsp page configuration or configuration in Freemark

<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>   
<fmt:formatDate value="${job.jobtime }" pattern="yyyy-MM-dd HH:mm:ss"/>

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