菜鸟的成长之路——springmvc的数据
2018-03-02 16:45
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现在企业基本都在使用html5+js+css作为前端开发,发送过来的数据往往需要我们做各种处理,来满足数据的一致,哪怕使用jsp开发页面也会存在这些问题。或者我们的数据不能以程序的形式展示给用户浏览,不然没有编程基础的用户看的很难甚至看不懂,也有时候同一个页面在不同的国家显示不同的语言等等问题,这些问题我们这节课来研究一下。
1、springmvc怎么进行json信息的转换呢?
json是在开发中经常使用的一种数据类型,在springmvc中转换json数据,我们加入jackson和fastjson两种依赖,我们看一下pom.xml。
pom.xml
我们在jsp中使用js的ajax发送json给控制器,控制器通过注解@RequestBody接收并解析json给一个对象,这样一个json的数据就解析到一个java对象中了,我们看一下代码。
springmvc的配置文件
index.jsp
People.java(接收json数据的对象)
ControllerTest.java
jsp里代码不多加累述了,我们看一下springmvc的配置文件,在
上面研究了springmvc将json数据转换成java对象,下面我们再来研究一下springmvc如何使用fastjson将java对象转换成json,并发送给jsp,springmvc配置文件不变,我们看一下处理器和jsp页面
index.jsp
ControllerTest.java
我们发现测试的页面上弹出对话框显示修改后的json数据,至此转变json并发送的代码研究完成。
2、springmvc如何解析xml的?
我们来看一下xml在前后端数据传输过程中如何操作的,需要我们添加jaxb的依赖,pom文件如下:
pom.xml
首先来看一下前端给后端发送xml数据,后端将xml数据解析到java对象上。
springmvc-config.xml
index.jsp
People.java
ControllerTest.java
测试发现,处理器已经正常的将xml解析成People的对象,但是不要忽略People已经不是个普通的pojo,它在类级别有了@XmlRootElement注解,在相应的setter方法上有了@XmlElement注解。我们再来看一下springmvc如何将java对象解析成xml并发送出去吧。
springmvc-config.xml
index.jsp
People.java
ControllerTest.java
测试后发现,前端正常接收到xml数据,证明springmvc已经将java对象转成xml并发送给前端了。
3、springmvc接收的字符串如何转换成java对象?
如果前端使用表单提交了用户信息,信息中有一条是生日,前端传给后端是字符串形式,往往我们后端需要一个Date类型的,这一点是前端做不到的,于是springmvc提供了类型转换的扩展,我们使用字符串转Date来举个例子。
StringToDateConverter.java
这个类实现了Converter接口,他可以检测前端发送数据和后端接收数据类型不同的时候,将前端类型转成后端类型。例如Converter
index.jsp
ControllerTest.java
前端发送过来的birthday是字符串的形式,而后端使用Date类型接收,这时候就会执行Converter接口实现类的convert()方法,然后将此方法返回的对象重新赋值给birthday参数。
Converter接口可以将任意Object转换成任意的Object,适用于项目中的各个层次需要类型转换的地方。
4、如何将springmvc接收的数据格式化?
上面我们提到Converter接口,springmvc也提供了Formatter接口,这个接口只能在String和java对象之间进行转换,我们通常用在前后端交互上,也就是格式化,我们来看一下格式化的代码:
DateFormat.java
格式化实现类实现了Formatter接口,重写了两个方法,其中parse()方法是格式化的方法,在这个方法中我们对接收到的字符串进行处理。
springmvc-config.xml
index.jsp
ControllerTest.java
运行处理器,可以正常接收到birthday参数,并且是Date类型,证明前端发送过来的参数已经格式化了。
1、springmvc怎么进行json信息的转换呢?
json是在开发中经常使用的一种数据类型,在springmvc中转换json数据,我们加入jackson和fastjson两种依赖,我们看一下pom.xml。
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.test</groupId> <artifactId>Test</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>Test Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-context --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.12.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.12.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.44</version> </dependency> </dependencies> <build> <finalName>Test</finalName> </build> </project>
我们在jsp中使用js的ajax发送json给控制器,控制器通过注解@RequestBody接收并解析json给一个对象,这样一个json的数据就解析到一个java对象中了,我们看一下代码。
springmvc的配置文件
<?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:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" 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-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd"> <!-- 让springmvc扫描controller的包 --> <context:component-scan base-package="com.springmvc.controller"></context:component-scan> <!-- 默认使用RequestMappingHandlerMapping映射器和RequestMappingHandlerAdapter适配器 --> <mvc:annotation-driven> <!-- 配置使用阿里的第三方包作为json转换接口 --> <mvc:message-converters> <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"></bean> </mvc:message-converters> </mvc:annotation-driven> </beans>
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script> </head> <body> <script type="text/javascript"> var user = {name:"caixiaobai",address:"Beijing",age:18}; var jsonUser = JSON.stringify(user); $.ajax({ type: "POST", url:"/Test/test.do", contentType: "application/json;", data: jsonUser, success: function (data) { alert("发送成功") }, error: function (data) { alert("发送失败") } }); </script> </body> </html>
People.java(接收json数据的对象)
package com.springmvc.pojo; public class People{ private String name; private String address; private int age; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } @Override public String toString() { // TODO Auto-generated method stub return "name==>"+name+"\naddress==>"+address+"\nage"+age; } }
ControllerTest.java
package com.springmvc.controller; import java.io.IOException; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import com.springmvc.pojo.People; @Controller public class ControllerTest { @RequestMapping("/test.do") public void ViewTest(@RequestBody People peo) throws IOException { System.out.println(peo.toString()); } }
jsp里代码不多加累述了,我们看一下springmvc的配置文件,在
<mvc:annotation-driven>标签中配置fastjson的信息转换支持类,然后使用@RequestBody注解将json信息解析到People类中,这样我们就可以直接操作peo对象了。
上面研究了springmvc将json数据转换成java对象,下面我们再来研究一下springmvc如何使用fastjson将java对象转换成json,并发送给jsp,springmvc配置文件不变,我们看一下处理器和jsp页面
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script> </head> <body> <script type="text/javascript"> var user = {name:"caixiaobai",address:"Beijing",age:18}; var jsonUser = JSON.stringify(user); $.ajax({ type: "POST", url:"/Test/test.do", contentType: "application/json;", data: jsonUser, dataType:"json", success: function (data) { alert("接收服务器数据的地址:"+data.address) }, error: function (data) { alert("发送失败") } }); </script> </body> </html>
ControllerTest.java
package com.springmvc.controller; import java.io.IOException; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import com.springmvc.pojo.People; @Controller public class ControllerTest { @RequestMapping("/test.do") @ResponseBody public People ViewTest(@RequestBody People peo) throws IOException { peo.setAddress("Beijing Chaoyang"); return peo; } }
我们发现测试的页面上弹出对话框显示修改后的json数据,至此转变json并发送的代码研究完成。
2、springmvc如何解析xml的?
我们来看一下xml在前后端数据传输过程中如何操作的,需要我们添加jaxb的依赖,pom文件如下:
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.test</groupId> <artifactId>Test</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>Test Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-context --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.12.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.12.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.xml.bind/jaxb-api --> <dependency> <groupId>javax.xml.bind</groupId> <artifactId>jaxb-api</artifactId> <version>2.2.12</version> </dependency> </dependencies> <build> <finalName>Test</finalName> </build> </project>
首先来看一下前端给后端发送xml数据,后端将xml数据解析到java对象上。
springmvc-config.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:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" 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-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd"> <!-- 让springmvc扫描controller的包 --> <context:component-scan base-package="com.springmvc.controller,com.springmvc.pojo"></context:component-scan> <!-- 默认使用RequestMappingHandlerMapping映射器和RequestMappingHandlerAdapter适配器 --> <mvc:annotation-driven> <!-- annotation-driven标签会默认执行下列注释掉的配置 --> <!-- <mvc:message-converters> <bean class="org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter"></bean> </mvc:message-converters> --> </mvc:annotation-driven> </beans>
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script> </head> <body> <script type="text/javascript"> var user = "<people><name>caixiaobai</name><address>Beijing</address><age>18</age></people>"; $.ajax({ type: "POST", url:"/Test/test.do", contentType: "application/xml;", data: user, success: function (data) { alert("服务器发送数据:"+data) }, error: function (data) { alert("发送失败") } }); </script> </body> </html>
People.java
package com.springmvc.pojo; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlRootElement; @XmlRootElement public class People{ private String name; private String address; private int age; public String getName() { return name; } @XmlElement public void setName(String name) { this.name = name; } public String getAddress() { return address; } @XmlElement public void setAddress(String address) { this.address = address; } public int getAge() { return age; } @XmlElement public void setAge(int age) { this.age = age; } @Override public String toString() { // TODO Auto-generated method stub return "name==>"+name+"\naddress==>"+address+"\nage"+age; } }
ControllerTest.java
package com.springmvc.controller; import java.io.IOException; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import com.springmvc.pojo.People; @Controller public class ControllerTest { @RequestMapping("/test.do") public void ViewTest(@RequestBody People peo) throws IOException { System.out.println(peo.getAddress()); } }
测试发现,处理器已经正常的将xml解析成People的对象,但是不要忽略People已经不是个普通的pojo,它在类级别有了@XmlRootElement注解,在相应的setter方法上有了@XmlElement注解。我们再来看一下springmvc如何将java对象解析成xml并发送出去吧。
springmvc-config.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:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" 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-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd"> <!-- 让springmvc扫描controller的包 --> <context:component-scan base-package="com.springmvc.controller,com.springmvc.pojo"></context:component-scan> <!-- 默认使用RequestMappingHandlerMapping映射器和RequestMappingHandlerAdapter适配器 --> <mvc:annotation-driven> <!-- annotation-driven标签会默认执行下列注释掉的配置 --> <!-- <mvc:message-converters> <bean class="org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter"></bean> </mvc:message-converters> --> </mvc:annotation-driven> </beans>
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script> </head> <body> <script type="text/javascript"> var user = "<people><name>caixiaobai</name><address>Beijing</address><age>18</age></people>"; $.ajax({ type: "POST", url:"/Test/test.do", contentType: "application/xml;", data: user, success: function (data) { alert("接收服务器数据的地址:"+$("address",data).text()) }, error: function (data) { alert("发送失败") } }); </script> </body> </html>
People.java
package com.springmvc.pojo; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlRootElement; @XmlRootElement public class People{ private String name; private String address; private int age; public String getName() { return name; } @XmlElement public void setName(String name) { this.name = name; } public String getAddress() { return address; } @XmlElement public void setAddress(String address) { this.address = address; } public int getAge() { return age; } @XmlElement public void setAge(int age) { this.age = age; } @Override public String toString() { // TODO Auto-generated method stub return "name==>"+name+"\naddress==>"+address+"\nage"+age; } }
ControllerTest.java
package com.springmvc.controller; import java.io.IOException; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import com.springmvc.pojo.People; @Controller public class ControllerTest { @RequestMapping("/test.do") @ResponseBody public People ViewTest(@RequestBody People peo) throws IOException { peo.setAddress("Beijing Chaoyang"); return peo; } }
测试后发现,前端正常接收到xml数据,证明springmvc已经将java对象转成xml并发送给前端了。
3、springmvc接收的字符串如何转换成java对象?
如果前端使用表单提交了用户信息,信息中有一条是生日,前端传给后端是字符串形式,往往我们后端需要一个Date类型的,这一点是前端做不到的,于是springmvc提供了类型转换的扩展,我们使用字符串转Date来举个例子。
StringToDateConverter.java
package com.springmvc.pojo; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import org.springframework.core.convert.converter.Converter; public class StringToDateConverter implements Converter<String, Date>{ public Date convert(String source) { // TODO Auto-generated method stub SimpleDateFormat format = new SimpleDateFormat("Y-M-d"); Date date = new Date(); try { date = format.parse(source); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } return date; } }
这个类实现了Converter接口,他可以检测前端发送数据和后端接收数据类型不同的时候,将前端类型转成后端类型。例如Converter
<?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:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" 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-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd"> <!-- 让springmvc扫描controller的包 --> <context:component-scan base-package="com.springmvc.controller"></context:component-scan> <!-- mvc:annotation-driven加载默认映射器和适配器,并且制定conversionService的bean --> <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven> <bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean"> <property name="converters"> <!-- 在conversionService中指定自己写的converter --> <list> <bean class="com.springmvc.pojo.StringToDateConverter"></bean> </list> </property> </bean> </beans>
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script> </head> <body> <form action="/Test/test.do" method="post"> <input type="text" name="birthday" value=""/> <input type="text" name="account" value=""/> <input type="submit" value="submit"></input> </form> </body> </html>
ControllerTest.java
package com.springmvc.controller; import java.util.Date; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; @Controller public class ControllerTest { @RequestMapping("/test.do") public String ViewTest(@RequestParam Date birthday,@RequestParam String account){ System.out.println(birthday); System.out.println(account); // 随意跳转一个界面 return "index.jsp"; } }
前端发送过来的birthday是字符串的形式,而后端使用Date类型接收,这时候就会执行Converter接口实现类的convert()方法,然后将此方法返回的对象重新赋值给birthday参数。
Converter接口可以将任意Object转换成任意的Object,适用于项目中的各个层次需要类型转换的地方。
4、如何将springmvc接收的数据格式化?
上面我们提到Converter接口,springmvc也提供了Formatter接口,这个接口只能在String和java对象之间进行转换,我们通常用在前后端交互上,也就是格式化,我们来看一下格式化的代码:
DateFormat.java
package com.springmvc.pojo; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; import org.springframework.format.Formatter; public class DateFormat implements Formatter<Date>{ private SimpleDateFormat dateFormat = new SimpleDateFormat("Y-M-D"); public String print(Date date, Locale locale) { // TODO Auto-generated method stub return null; } public Date parse(String text, Locale locale) throws ParseException { // TODO Auto-generated method stub System.out.println("bbbbbb"); return dateFormat.parse(text); } }
格式化实现类实现了Formatter接口,重写了两个方法,其中parse()方法是格式化的方法,在这个方法中我们对接收到的字符串进行处理。
springmvc-config.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:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" 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-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd"> <!-- 让springmvc扫描controller的包 --> <context:component-scan base-package="com.springmvc.controller"></context:component-scan> <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven> <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> <!-- formatters属性配置格式化实现类 --> <property name="formatters"> <list> <bean class="com.springmvc.pojo.DateFormat"></bean> </list> </property> </bean> </beans>
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script> </head> <body> <form action="/Test/test.do" method="post"> <input type="text" name="birthday" value=""/> <input type="text" name="account" value=""/> <input type="submit" value="submit"></input> </form> </body> </html>
ControllerTest.java
package com.springmvc.controller; import java.util.Date; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; @Controller public class ControllerTest { @RequestMapping("/test.do") public String ViewTest(@RequestParam Date birthday,@RequestParam String account){ System.out.println(birthday); // 随意跳转一个界面 return "index.jsp"; } }
运行处理器,可以正常接收到birthday参数,并且是Date类型,证明前端发送过来的参数已经格式化了。
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