JSF配置笔记

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JSF JavaEE Bean Servlet SUN

JSF 细粒度的提交，事件驱动型的组件模型

FacesSevlet 处理相当于struts的actionSevlet

jsF请求处理生命周期

恢复视图
应用请求值
处理验证
更新模型值
调用应用程序
呈现响应

jsf配置实例

新建工程，在myeclipse中加入jsf类包

新建类

public class Computer {
private double firstNumber = 0.0;
private double secondNumber = 0.0;
private double result;
private ComputerOper computerOpr = new ComputerOper();
public double getFirstNumber() {
return firstNumber;
}

public void setFirstNumber(double firstNumber) {
this.firstNumber = firstNumber;
}

public double getSecondNumber() {
return secondNumber;
}

public void setSecondNumber(double secondNumber) {
this.secondNumber = secondNumber;
}

public double getResult() {
return result;
}

public void setResult(double result) {
  this.result = result;
}

public String add(){
  result = computerOpr.add(this.firstNumber, this.secondNumber);
  //必须是字符串
  return "success";
}
}

public class ComputerOper {
public double add(double a,double b){
return a+b;
}
}

配置faces-config.xml 文件

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

<faces-config xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"
    version="1.2">

<application>
  <view-handler>com.sun.facelets.FaceletViewHandler</view-handler>
</application>
<managed-bean>
  <managed-bean-name>Computer</managed-bean-name>
  <managed-bean-class>test.Computer</managed-bean-class>
  <managed-bean-scope>session</managed-bean-scope>


</managed-bean>

<navigation-rule>
  <from-view-id>/index.jsp</from-view-id>
  <navigation-case>
   <from-outcome>success</from-outcome>
   <to-view-id>/result.jsp</to-view-id>
  </navigation-case>
</navigation-rule>

</faces-config>

页面中使用jsf标签

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<context-param>
    <param-name>javax.faces.CONFIG_FILES</param-name>
    <param-value>/WEB-INF/faces-config.xml</param-value>
</context-param>
<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.faces</url-pattern>
</servlet-mapping>
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<listener>
  <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>
<listener>
  <listener-class>com.sun.faces.application.WebappLifecycleListener</listener-class>
</listener>
</web-app>