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再做頁面靜態化處理時,有時候我們需要 兩種或者兩種以上的視圖解析方式,比如 jsp,html,json,jstl,ftl等等,顯然默認的 springmvc 只配置一種視圖解析方式是滿足不了我們的,但是放心,springmvc提供了配置多視圖解析的方式:
比如:一種視圖解析用來 解析 freemarker靜態化後的html,另一種視圖解析用來解析 jsp(jstl)
網上好多方式都有提到用 order 來設置解析器的優先級,但經試驗,優先級低的還是生效不了,不知道是否有其他的解決方法?最終查看源碼才發現原來springmvc 只給我們提供了 待我們重寫的方法,看源碼:
- /*** Eclipse Class Decompiler plugin, copyright (c) 2012 Chao Chen ([email protected]) ***/
- 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 ([email protected]) ***/
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();
}
}
所以怎麼做就很明確了:
第一步:新建一個html的解析器並繼承 InternalResourceView 後重寫 checkResource
- 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();// 判斷該頁面是否存在
- }
- }
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();// 判斷該頁面是否存在
}
}
第二步:在xml配置文件中 指定解析器的 viewClass爲該解析類
- <!-- 定義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>
- <!-- 定義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>
<!-- 定義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>
<!-- 定義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>
源碼可參考 開源項目:https://github.com/izhbg/typz- 頂
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網上類似文章很多,很多複製的沒什麼用。