spring mvc 数据格式化

web.xml

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/services.xml</param-value>
        </init-param>
        <load-on-startup></load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

services.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <context:component-scan base-package="org.mythsky.springmvcdemo"></context:component-scan>
    <!--<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>-->
    <!--<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean>-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    <mvc:annotation-driven></mvc:annotation-driven>
</beans>

这里一定要注意被注释的部分，否则运行后会报400错误

Product.java

package org.mythsky.springmvcdemo.model;

import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.format.annotation.NumberFormat;

import java.io.Serializable;
import java.util.Date;

public class Product implements Serializable {
    @DateTimeFormat(pattern = "yyyy-MM-dd")
    private Date createDate;
    @NumberFormat(style = NumberFormat.Style.NUMBER,pattern = "#,###")
    private int total;
    @NumberFormat(style = NumberFormat.Style.PERCENT)
    private double discount;
    @NumberFormat(style = NumberFormat.Style.CURRENCY)
    private double money;

    public Product() {
//        super();
    }

    public Date getCreateDate() {
        return createDate;
    }

    public void setCreateDate(Date createDate) {
        this.createDate = createDate;
    }

    public int getTotal() {
        return total;
    }

    public void setTotal(int total) {
        this.total = total;
    }

    public double getDiscount() {
        return discount;
    }

    public void setDiscount(double discount) {
        this.discount = discount;
    }

    public double getMoney() {
        return money;
    }

    public void setMoney(double money) {
        this.money = money;
    }
}

大部分书里写这里必须要有无参构造函数，如果没有其他构造函数的话不写也行

ProductController.java

package org.mythsky.springmvcdemo.controller;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.mythsky.springmvcdemo.model.Product;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class ProductController {
    private static final Log logger= LogFactory.getLog(ProductController.class);
    @RequestMapping(value = "/product")
    public String test(@ModelAttribute Product product, Model model){
        logger.info(product);
        model.addAttribute("product",product);
        return "showproduct";
    }
}

testForm.jsp

<%--
  Created by IntelliJ IDEA.
  User: mythsky
  Date: //
  Time: :
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>FormmaterTest</title>
</head>
<body>
<h3>测试表单数据格式化</h3>
<form action="product" method="post">
    <table>
        <tr>
            <td><label>日期类型：</label></td>
            <td><input type="text" name="createDate"> </td>
        </tr>
        <tr>
            <td><label>整数类型：</label></td>
            <td><input type="text" name="total"> </td>
        </tr>
        <tr>
            <td><label>百分数类型：</label></td>
            <td><input type="text" name="discount"> </td>
        </tr>
        <tr>
            <td><label>货币类型：</label></td>
            <td><input type="text" name="money"> </td>
        </tr>
        <tr>
            <td><input type="submit" value="提交"> </td>
        </tr>
    </table>
</form>
</body>
</html>

showproduct.jsp

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%--
  Created by IntelliJ IDEA.
  User: mythsky
  Date: //
  Time: :
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>测试表单数据格式化</title>
</head>
<body>
<form:form modelAttribute="product" method="post" action="">
    <table>
        <tr>
            <td>日期类型：</td>
            <td><form:input path="createDate"></form:input></td>
        </tr>
        <tr>
            <td><label>整数类型：</label></td>
            <td><form:input path="total"></form:input> </td>
        </tr>
        <tr>
            <td><label>百分数类型：</label></td>
            <td><form:input path="discount"></form:input> </td>
        </tr>
        <tr>
            <td><label>货币类型：</label></td>
            <td><form:input path="money"></form:input> </td>
        </tr>
    </table>
</form:form>
</body>
</html>

运行结果

实体类转换Json

@JsonFormat(timezone = "GMT+8", pattern = "yyyy-MM-dd HH:mm")
    private Date updateTime;