15SpringMvc_在业务控制方法中写入模型变量收集参数，且使用@InitBind来解决字符串转日期类型

2023-08-04 20:00:16

之前第12篇文章中提到过在业务控制方法中写入普通变量收集参数的方式，也提到了这种凡方式的弊端（参数很多怎么办），所以这篇文章讲的是在业务控制方法中写入模型变量来收集参数。本文的案例实现的功能是，在注册页面(adduser.jsp)上需要输入用户的Id,用户的名字，用户的薪水，用户的入职日期，然后在Action收集，并且在success.jsp中显示出来。

案例如下：

案例结构图：

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" alt="" />

上图中的web.xml中内容如下：

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">

  <display-name>SpringMvc_10day_self</display-name>

  <!-- Spring提供了一个Filter专门用来解决Post提交中文的乱码问题 -->

   <filter>

     <filter-name>CharacterEncodingFilter</filter-name>

     <filter-class>

 org.springframework.web.filter.CharacterEncodingFilter

 </filter-class>

 <init-param>

    <param-name>encoding</param-name>

    <param-value>UTF-8</param-value>

 </init-param>

</filter>

 <filter-mapping>

 <filter-name>CharacterEncodingFilter </filter-name>

 <url-pattern>/*</url-pattern>

 </filter-mapping>

  <servlet>

  <!--这个名字可以随便取得，但是这个名字取了之后，以后在 WEB-INF下面创建SpirngMVC的配置文件是，命名必须以这个开头，

  所以这里取名叫做DispatcherServlet，那么之后的xml文件取名必须为DispatcherServlet-servlet.xml（一个字都不能差）

  -->

  <servlet-name>DispatcherServlet</servlet-name>

  <servlet-class> org.springframework.web.servlet.DispatcherServlet</servlet-class>

 <!-- 通知DispatcherServlet去指定目录下找到springmvc.xml配置文件 -->

 <!--

 注意这里的  <param-name>contextConfigLocation</param-name>一个字母都不能有错

 一旦有错就会去WEB-INF下面去找

  -->

          <init-param>

               <param-name>contextConfigLocation</param-name>

              <param-value>classpath:spring.xml</param-value>

          </init-param>

 </servlet>

 <servlet-mapping>

   <servlet-name>DispatcherServlet</servlet-name>

    <url-pattern>*.action</url-pattern>

 </servlet-mapping>

  <welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

</web-app>

第二步：写spring.xml文件

<?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:aop="http://www.springframework.org/schema/aop"

      xmlns:tx="http://www.springframework.org/schema/tx"

      xmlns:mvc="http://www.springframework.org/schema/mvc"

      xsi:schemaLocation="

      http://www.springframework.org/schema/beans

      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

      http://www.springframework.org/schema/context

      http://www.springframework.org/schema/context/spring-context-3.0.xsd

      http://www.springframework.org/schema/aop

      http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

      http://www.springframework.org/schema/tx

      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

      http://www.springframework.org/schema/mvc

      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"

>

<import resource="com/guigu/shen/Action8/springmvc_008.xml"/>

</beans>

第三步：编写springmvc_008.xml文件

<?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:aop="http://www.springframework.org/schema/aop"

      xmlns:tx="http://www.springframework.org/schema/tx"

      xmlns:mvc="http://www.springframework.org/schema/mvc"

      xsi:schemaLocation="

      http://www.springframework.org/schema/beans

      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

      http://www.springframework.org/schema/context

      http://www.springframework.org/schema/context/spring-context-3.0.xsd

      http://www.springframework.org/schema/aop

      http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

      http://www.springframework.org/schema/tx

      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

      http://www.springframework.org/schema/mvc

      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"

>

     <!-- 控制器(程序员)（必须配置） -->

<context:component-scan base-package="com.guigu.shen.Action8"/>

  <!-- 基于注解的映射器(可选)

  这个类和以前的xml方式的类不同，专门是注解用的

  -->

      <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>

      <!-- 基于注解的适配器(可选)

        这个类和以前的xml方式的类不同，专门是注解用的

       -->

      <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>

      <!-- 视图解析器(可选)

        这个类和以前的xml方式的类一样

      -->

      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

   </bean>

</beans>

第四步：编写实体类User。

package com.guigu.shen.Action8;

import java.util.Date;

/*

用户

 */

public class User {

    private Integer id=1;

    private String username;

    private Double salary;

    private Date hiredate;

    /**

     *

     */

    public User() {

    }

    /**

     * @return the id

     */

    public Integer getId() {

        return id;

    }

    /**

     * @param id the id to set

     */

    public void setId(Integer id) {

        this.id = id;

    }

    /**

     * @return the username

     */

    public String getUsername() {

        return username;

    }

    /**

     * @param username the username to set

     */

    public void setUsername(String username) {

        this.username = username;

    }

    /**

     * @return the salary

     */

    public Double getSalary() {

        return salary;

    }

    /**

     * @param salary the salary to set

     */

    public void setSalary(Double salary) {

        this.salary = salary;

    }

    /**

     * @return the hiredate

     */

    public Date getHiredate() {

        return hiredate;

    }

    /**

     * @param hiredate the hiredate to set

     */

    public void setHiredate(Date hiredate) {

        this.hiredate = hiredate;

    }

/* (non-Javadoc)

 * @see java.lang.Object#toString()

 */

@Override

public String toString() {

    return this.id+this.username+this.salary+this.hiredate.toString();

}

}

第五步：编写Action8包下面的UserAction.java文件

/**

 * Create by 沈晓权

 * Create on 2016年8月8日下午8:53:34

 */

package com.guigu.shen.Action8;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

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

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

/**

 *

 *

请求路径可以拆分为：根模块的名字+分模块的名字

就是相当于当访问http://127.0.0.1:8080:项目名/user/register时就会进入到

registerMethod方法。

 */

@Controller

@RequestMapping(value="/user")//根模块的请求名字

public class UserAction {

    /*

     * 员工注册

     *

     */

@RequestMapping(method=RequestMethod.POST,value="/register")//分模块的请求名字

/*

采用模型的方式(User)来收集从页面传来的参数。

方法里面的参数user和以前的参数一样会被用反射的方式去赋值。

 */

public String registerMethod(User user,Model model)

{

//打印出user里面的信息

    System.out.print("员工的信息是"+user.toString());

    //将User绑定到model对象中去。

    model.addAttribute("user", user);

    //转发到 success.jsp中去。

    return "/jsp/success.jsp";

}

@RequestMapping(value="/login",method={RequestMethod.POST,RequestMethod.GET})//分模块的请求名字

public String loginMethod(Model model,String username)

{

    model.addAttribute("message", "员工注册成功");

    System.out.println(username);

    return "/jsp/success.jsp";

}

}

第六步：测试。在adduse.jsp中输入信息。

aaarticlea/png;base64,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" alt="" />

但是出现了错误，

错误提示：Field error in object 'user' on field 'hiredate': rejected value [2015-3-2]；表示Date类型的2015-3-2不能不能采集到。

那怎么办?参考第八篇博客写日期转换器。第八篇博客里面写的是protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder)这个方法。但是我么这里没有，那怎么办?用注解@InitBinder。这样子的话一旦发现Date类型失败，马上去找被@InitBinder注解的方法，然后执行里面的日期转换器。

修改UserAction.java方法

package com.guigu.shen.Action8;

import java.text.SimpleDateFormat;

import java.util.Date;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.propertyeditors.CustomDateEditor;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.ServletRequestDataBinder;

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

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

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

/**

 *

 *

请求路径可以拆分为：根模块的名字+分模块的名字

就是相当于当访问http://127.0.0.1:8080:项目名/user/register时就会进入到

registerMethod方法。

 */

@Controller

@RequestMapping(value="/user")//根模块的请求名字

public class UserAction {

    /*

     * 员工注册

     *

     */

@RequestMapping(method=RequestMethod.POST,value="/register")//分模块的请求名字

/*

采用模型的方式(User)来收集从页面传来的参数。

方法里面的参数user和以前的参数一样会被用反射的方式去赋值。

 */

public String registerMethod(User user,Model model)

{

//打印出user里面的信息

    System.out.print("员工的信息是"+user.toString());

    //将User绑定到model对象中去。

    model.addAttribute("user", user);

    //转发到 success.jsp中去。

    return "/jsp/success.jsp";

}

@RequestMapping(value="/login",method={RequestMethod.POST,RequestMethod.GET})//分模块的请求名字

public String loginMethod(Model model,String username)

{

    model.addAttribute("message", "员工注册成功");

    System.out.println(username);

    return "/jsp/success.jsp";

}

/**

 * 自定义类型转换器

 * 就是说当Date类型的数据不能得到时，会自动查找@InitBinder注解过的方法

 *

 */

@InitBinder

protected void initBinder(HttpServletRequest request,ServletRequestDataBinder binder) throws Exception {

    binder.registerCustomEditor(Date.class, new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"),true));

}

}

运行结果：一切正常。

码农公寓

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