和Java EE 6一起来的JSF 2.0虽然动静不是很大，但SUN在Java EE 6 Tutorial中的一些表态比较明显。
JSP is considered as a deprecated presentation technology for JavaServer Faces 2.0.
存档个小例子：前端是两个xhtml, request/response, 他们调用后台的managed bean完成逻辑。
其中有些说明：
1、@ManagedBean 表示用于JSF的托管Bean
2、@SessionScoped表示生命周期
3、类名和属性名称在这里首字母小写了
Request.xhtml
代码
<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<h:body>
<h:form>
<h:inputText id="x" value="#{calcBean.x}">
<f:validateLongRange minimum="#{calcBean.min}" maximum="#{calcBean.max}"/>
</h:inputText>
<h:inputText id="y" value="#{calcBean.y}">
<f:validateLongRange minimum="#{calcBean.min}" maximum="#{calcBean.max}"/>
</h:inputText>
</h:form>
</h:body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<h:body>
<h:form>
<h:inputText id="x" value="#{calcBean.x}">
<f:validateLongRange minimum="#{calcBean.min}" maximum="#{calcBean.max}"/>
</h:inputText>
<h:inputText id="y" value="#{calcBean.y}">
<f:validateLongRange minimum="#{calcBean.min}" maximum="#{calcBean.max}"/>
</h:inputText>
<h:commandButton id="submit" value="calc" action="response.xhtml"/>
</h:form>
</h:body>
</html>
Response.xhtml
代码
<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html">
<h:body>
<h:outputLabel value="#{calcBean.response}"/>
</h:body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html">
<h:body>
<h:outputLabel value="#{calcBean.response}"/>
</h:body>
</html>
Bean Code
代码
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
int x;
int y;
static final int MIN = 10;
return "Calculator";
}
return x;
}
return y;
}
x = newVal;
}
y = newVal;
}
public int getResponse(){
return x + y;
}
return MAX;
}
return MIN;
}
import javax.faces.bean.SessionScoped;
@ManagedBean
@SessionScoped
int x;
int y;
static final int MAX = 20;
static final int MIN = 10;
public String note(){
return "Calculator";
}
public int getX(){
return x;
}
public int getY(){
return y;
}
public void setX(int newVal){
x = newVal;
}
public void setY(int newVal){
y = newVal;
}
public int getResponse(){
return x + y;
}
public int getMax(){
return MAX;
}
public int getMin(){
return MIN;
}
}
效果：
1、输入不合规范数据：
2、输入合规数据
