spring自定义标签使用
2017-05-28 09:57
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原理实现请看:spring自定义标签原理
一、首先建立一个标签对应的实体类User
[java] view
plain copy
public class User {
private String userName;
private String email;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
二、建立解析自定义标签的类 UserBeanDefinitionParser
[java] view
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package vip.spring.demo.customTag;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.util.StringUtils;
import org.w3c.dom.Element;
public class UserBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
protected Class getBeanClass(Element element) {
return User.class;
}
protected void doParse(Element element, BeanDefinitionBuilder bean) {
String userName = element.getAttribute("userName");
String email = element.getAttribute("email");
if (StringUtils.hasText(userName)) {
bean.addPropertyValue("userName", userName);
}
if (StringUtils.hasText(email)) {
bean.addPropertyValue("email", email);
}
}
}
三、建立处理的类 NamespaceHandlerSupport,这个类主要用来调用解释类
[java] view
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package vip.spring.demo.customTag;
import org.springframework.beans.factory.xml.NamespaceHandlerSupport;
public class MyNamespaceHandler extends NamespaceHandlerSupport {
public void init() {
registerBeanDefinitionParser("user", new UserBeanDefinitionParser());
}
}
四、建立xsd 文件,用来校验我们的自定义标签的有效性
[html] view
plain copy
<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.lexueba.com/schema/user"
xmlns:tns="http://www.lexueba.com/schema/user" elementFormDefault="qualified">
<element name="user">
<complexType>
<attribute name="id" type="string" />
<attribute name="userName" type="string" />
<attribute name="email" type="string" />
</complexType>
</element>
</schema>
五、spring读取我们自定义的schema和handlers默认是根据spring.handlers和spring.schemas来读取的,这两个文件默认要放在META-INF下
具体配置:
spring.handlers
[html] view
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http\://www.lexueba.com/schema/user=vip.spring.demo.customTag.MyNamespaceHandler
spring.schemas
[html] view
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http\://www.lexueba.com/schema/user.xsd=META-INF/spring-test.xsd
六、配置完毕后,我们就可以使用自定义标签了,建立test.xml.建立的时候,如果eclipse没有提示,可以在Preferencers -> XML Catalog 下添加我们刚刚的xsd
test.xml
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<?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:myname="http://www.lexueba.com/schema/user"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.lexueba.com/schema/user http://www.lexueba.com/schema/user.xsd">
<myname:user id="testBean" userName="cong" email="mail.163.com"/>
</beans>
最后,编写test的文件 SpringCustomTest.java
[java] view
plain copy
package vip.spring.demo.customTag;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SpringCustomTest {
public static void main(String[] args) {
ApplicationContext ac = new ClassPathXmlApplicationContext("test.xml");
User user = (User) ac.getBean("testBean");
System.out.println(user.getUserName());
}
}
整个项目目录如下:
项目 pom.xml
[html] view
plain copy
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>3.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>3.2.0.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<encoding>UTF8</encoding>
</configuration>
</plugin>
</plugins>
</build>
转载链接:http://blog.csdn.net/sonycong/article/details/52386783
一、首先建立一个标签对应的实体类User
[java] view
plain copy
public class User {
private String userName;
private String email;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
二、建立解析自定义标签的类 UserBeanDefinitionParser
[java] view
plain copy
package vip.spring.demo.customTag;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.util.StringUtils;
import org.w3c.dom.Element;
public class UserBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
protected Class getBeanClass(Element element) {
return User.class;
}
protected void doParse(Element element, BeanDefinitionBuilder bean) {
String userName = element.getAttribute("userName");
String email = element.getAttribute("email");
if (StringUtils.hasText(userName)) {
bean.addPropertyValue("userName", userName);
}
if (StringUtils.hasText(email)) {
bean.addPropertyValue("email", email);
}
}
}
三、建立处理的类 NamespaceHandlerSupport,这个类主要用来调用解释类
[java] view
plain copy
package vip.spring.demo.customTag;
import org.springframework.beans.factory.xml.NamespaceHandlerSupport;
public class MyNamespaceHandler extends NamespaceHandlerSupport {
public void init() {
registerBeanDefinitionParser("user", new UserBeanDefinitionParser());
}
}
四、建立xsd 文件,用来校验我们的自定义标签的有效性
[html] view
plain copy
<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.lexueba.com/schema/user"
xmlns:tns="http://www.lexueba.com/schema/user" elementFormDefault="qualified">
<element name="user">
<complexType>
<attribute name="id" type="string" />
<attribute name="userName" type="string" />
<attribute name="email" type="string" />
</complexType>
</element>
</schema>
五、spring读取我们自定义的schema和handlers默认是根据spring.handlers和spring.schemas来读取的,这两个文件默认要放在META-INF下
具体配置:
spring.handlers
[html] view
plain copy
http\://www.lexueba.com/schema/user=vip.spring.demo.customTag.MyNamespaceHandler
spring.schemas
[html] view
plain copy
http\://www.lexueba.com/schema/user.xsd=META-INF/spring-test.xsd
六、配置完毕后,我们就可以使用自定义标签了,建立test.xml.建立的时候,如果eclipse没有提示,可以在Preferencers -> XML Catalog 下添加我们刚刚的xsd
test.xml
[html] view
plain copy
<?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:myname="http://www.lexueba.com/schema/user"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.lexueba.com/schema/user http://www.lexueba.com/schema/user.xsd">
<myname:user id="testBean" userName="cong" email="mail.163.com"/>
</beans>
最后,编写test的文件 SpringCustomTest.java
[java] view
plain copy
package vip.spring.demo.customTag;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SpringCustomTest {
public static void main(String[] args) {
ApplicationContext ac = new ClassPathXmlApplicationContext("test.xml");
User user = (User) ac.getBean("testBean");
System.out.println(user.getUserName());
}
}
整个项目目录如下:
项目 pom.xml
[html] view
plain copy
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>3.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>3.2.0.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<encoding>UTF8</encoding>
</configuration>
</plugin>
</plugins>
</build>
转载链接:http://blog.csdn.net/sonycong/article/details/52386783
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