方法一:
修改server.xml: URIEncoding="utf-8"
<Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" URIEncoding="UTF-8" />
方法二:
String parameter = request.getParameter("auth_id");
String string = new String(parameter.getBytes("iso-8859-1"), "utf-8");
(1)tomcat7,URL中参数的默认解码是ISO-8859-1,而tomcat8的默认解码为utf-8。
(2)在过滤器中使用 request.setCharacterEncoding() 只能用来处理 POST 请求,对 GET 则无效。
(3)tomcat乱码的终极解决办法:
tomcat7:设置URIEncoding + Post的过滤器
tomcat8:只要设置一个Post过滤器就可以了,tomcat9跟tomcat8是一样的。
<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>