web.xml配置編碼過濾器解決中文亂碼問題

web.xml配置編碼過濾器解決中文亂碼問題

爲了防止前端傳入的中文數據出現亂碼問題，使用Spring提供的編碼過濾器來統一編碼。

要使用編碼過濾器，只需要在web.xml中添加如下代碼：

<filter>
	<filter-name>encodingFilter</filter-name>
	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
	<init-param>
		<param-name>encoding</param-name>
    	<param-value>UTF-8</param-value>
	</init-param>
	<init-param>
		<param-name>forceEncoding</param-name>
		<param-value>true</param-value>
	</init-param>
</filter>
<filter-mapping>
	<filter-name>encodingFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

一個項目只需要配置一次，永久使用(過濾)

如果出現以下情況：

java.lang.ClassNotFoundException: org.springframework.web.filter.CharacterEncodingFilter
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1324)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1177)
	at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:550)
	at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:531)
	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4603)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5210)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

可以試一下以下方法：