springmvc如何设置多视图器，springmvc 多个 ViewResolver_springmvc的设计如何实现的多视图-优快云博客

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springmvc如何设置多视图器，springmvc 多个 ViewResolver

2016-06-08 10:53 17474人阅读评论(3) 收藏举报

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分类：

springmvc

再做页面静态化处理时，有时候我们需要两种或者两种以上的视图解析方式，比如 jsp,html,json,jstl,ftl等等，显然默认的 springmvc 只配置一种视图解析方式是满足不了我们的，但是放心，springmvc提供了配置多视图解析的方式：

比如：一种视图解析用来解析 freemarker静态化后的html,另一种视图解析用来解析 jsp(jstl)

网上好多方式都有提到用 order 来设置解析器的优先级，但经试验，优先级低的还是生效不了，不知道是否有其他的解决方法？最终查看源码才发现原来springmvc 只给我们提供了待我们重写的方法，看源码：

[java] view plain copy

print ?

/*** Eclipse Class Decompiler plugin, copyright (c) 2012 Chao Chen (cnfree2000@hotmail.com) ***/
package org.springframework.web.servlet.view;
import java.util.Locale;
import org.springframework.beans.factory.InitializingBean;
public abstract class AbstractUrlBasedView extends AbstractView implements
InitializingBean {
private String url;
protected AbstractUrlBasedView() {
}
protected AbstractUrlBasedView(String url) {
this.url = url;
}
public void setUrl(String url) {
this.url = url;
}
public String getUrl() {
return this.url;
}
public void afterPropertiesSet() throws Exception {
if ((isUrlRequired()) && (getUrl() == null))
throw new IllegalArgumentException("Property 'url' is required");
}
protected boolean isUrlRequired() {
return true;
}
<span style="background-color: rgb(255, 255, 204);">public boolean checkResource(Locale locale) throws Exception {
return true;
}</span>
public String toString() {
StringBuilder sb = new StringBuilder(super.toString());
sb.append("; URL [").append(getUrl()).append("]");
return sb.toString();
}
}

/*** Eclipse Class Decompiler plugin, copyright (c) 2012 Chao Chen (cnfree2000@hotmail.com) ***/
package org.springframework.web.servlet.view;

import java.util.Locale;
import org.springframework.beans.factory.InitializingBean;

public abstract class AbstractUrlBasedView extends AbstractView implements
		InitializingBean {
	private String url;

	protected AbstractUrlBasedView() {
	}

	protected AbstractUrlBasedView(String url) {
		this.url = url;
	}

	public void setUrl(String url) {
		this.url = url;
	}

	public String getUrl() {
		return this.url;
	}

	public void afterPropertiesSet() throws Exception {
		if ((isUrlRequired()) && (getUrl() == null))
			throw new IllegalArgumentException("Property 'url' is required");
	}

	protected boolean isUrlRequired() {
		return true;
	}

	<span style="background-color: rgb(255, 255, 204);">public boolean checkResource(Locale locale) throws Exception {
		return true;
	}</span>

	public String toString() {
		StringBuilder sb = new StringBuilder(super.toString());
		sb.append("; URL [").append(getUrl()).append("]");
		return sb.toString();
	}
}

所以怎么做就很明确了：

第一步：新建一个html的解析器并继承 InternalResourceView 后重写 checkResource

[java] view plain copy

print ?

package com.izhbg.typz.common.springmvc.view;
import java.io.File;
import java.util.Locale;
import org.springframework.web.servlet.view.InternalResourceView;
/**
*
* @ClassName: HtmlResourceView
* @author caixl
* @date 2016-6-8 上午11:01:41
*
*/
public class HtmlResourceView extends InternalResourceView {
@Override
public boolean checkResource(Locale locale) {
File file = new File(this.getServletContext().getRealPath("/") + getUrl());
return file.exists();// 判断该页面是否存在
}
}

package com.izhbg.typz.common.springmvc.view;

import java.io.File;
import java.util.Locale;

import org.springframework.web.servlet.view.InternalResourceView;
/**
 * 
* @ClassName: HtmlResourceView 
* @author caixl 
* @date 2016-6-8 上午11:01:41 
*
 */
public class HtmlResourceView extends InternalResourceView {
	 @Override
	 public boolean checkResource(Locale locale) {
	  File file = new File(this.getServletContext().getRealPath("/") + getUrl());
	  return file.exists();// 判断该页面是否存在
	 }
}

第二步：在xml配置文件中指定解析器的 viewClass为该解析类

[html] view plain copy

print ?

<bean id="htmlviewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="com.izhbg.typz.common.springmvc.view.HtmlResourceView"/>
<property name="order" value="0" />
<property name="prefix" value="/cms/"/>
<property name="suffix" value=".html" />
<property name="contentType" value="text/html;charset=UTF-8"></property>
</bean>
<bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="order" value="1" />
<property name="prefix" value="/views/"/>
<property name="suffix" value=".jsp"/>
</bean>

<!-- 定义HTML文件的位置 -->
	 <bean id="htmlviewResolver"  
        class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
        <property name="viewClass" value="com.izhbg.typz.common.springmvc.view.HtmlResourceView"/>
        <property name="order" value="0" />
        <property name="prefix" value="/cms/"/>
        <property name="suffix" value=".html" />  
        <property name="contentType" value="text/html;charset=UTF-8"></property>  
    </bean>
	<!-- 定义JSP文件的位置 -->
	<bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="order" value="1" />
		<property name="prefix" value="/views/"/>
		<property name="suffix" value=".jsp"/>
	</bean>

源码可参考开源项目：https://github.com/izhbg/typz

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