作者：李伯翔刚瑋嘉军 | 来源：互联网 | 2023-10-12 20:27
效果图&＃xff1a;
< filter> < filter-name> filter-name > < filter-class> filter-class > < init-param> < param-name> param-name > < param-value> param-value > init-param > filter > < filter-mapping> < filter-name> filter-name > < url-pattern> url-pattern > filter-mapping >
login.html&＃xff1a;
< html> < head> < metacharset &＃61; " UTF-8" > < title> title > head > < body> < formaction &＃61; " myServlet" method &＃61; " post" > < inputtype &＃61; " text" name &＃61; " username" /> < inputtype &＃61; " submit" value &＃61; " 提交" /> form > body > html >
MyServlet.java&＃xff1a;
package text. web. filter; import java. io. IOException; import javax. servlet. ServletException; import javax. servlet. annotation. WebServlet; import javax. servlet. http. HttpServlet; import javax. servlet. http. HttpServletRequest; import javax. servlet. http. HttpServletResponse; &＃64;WebServlet ( "/myServlet" ) public class MyServlet extends HttpServlet { protected void service ( HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String username &＃61; req. getParameter ( "username" ) ; System. out. println ( username) ; } }
CharacterEncodingFilter.java&＃xff1a;
package text. web. filter; import java. io. IOException; import javax. servlet. Filter; import javax. servlet. FilterChain; import javax. servlet. FilterConfig; import javax. servlet. ServletException; import javax. servlet. ServletRequest; import javax. servlet. ServletResponse; public class CharacterEncodingFilter implements Filter { private String encoding; public void init ( FilterConfig filterConfig) throws ServletException { this . encoding&＃61; filterConfig. getInitParameter ( "encoding" ) ; } public void doFilter ( ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { request. setCharacterEncoding ( encoding) ; chain. doFilter ( request, response) ; } public void destroy ( ) { } public String getEncoding ( ) { return encoding; } public void setEncoding ( String encoding) { this . encoding &＃61; encoding; } }
![[大整数乘法] java代码实现](https://img1.php1.cn/3cd4a/24c6f/9f3/0133bb25da242824.jpeg)
京公网安备 11010802041100号