Java常用代码段记录

首字母大写

public static String captureName(String name) {
        char[] cs=name.toCharArray();
        cs[0]-=32;
        return String.valueOf(cs);
}

　　

filter调用service

package com.tonbusoft.uums.filter;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;


import com.tonbusoft.uums.commons.utils.IpUtil;
import com.tonbusoft.uums.commons.utils.JWTUtils;
import com.tonbusoft.uums.commons.utils.SendUtil;
import com.tonbusoft.uums.module.ua.bean.UaDict;
import com.tonbusoft.uums.module.ua.service.UaDictService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
 * 请求过滤器
 */
public class JWTFilter implements Filter{
    public FilterConfig config;
    public UaDictService uaDictService;
    public ApplicationContext ctx = null;
    
    @Override
    public void destroy() {
        this.config = null;
    }

    //过滤请求 认证token有效性
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest hrequest = (HttpServletRequest)request;
        HttpServletResponseWrapper hresponse = new HttpServletResponseWrapper((HttpServletResponse) response);
        String path = hrequest.getRequestURI();
        
        if (path.indexOf("/UUMS/webservice/myService") > -1) {
            //是UUMS供第三方调用的接口
            //判断是否需要进行token有效性验证
            String action = path.substring(path.lastIndexOf("/")+1,path.length());
            //获取数据库配置
            boolean validateFlag = false;
            List<UaDict> list = uaDictService.findByFbh("2");
            if (null != list && list.size() > 0) {
                validateFlag = true;
            }
            
            if (validateFlag) {
                //验证token失败
                Map<String, String> tokenMap = new HashMap<>();
                tokenMap.put("token_validate", "error_token_validate");
                SendUtil.write(hresponse, tokenMap);
            } else {
                //不验证token
                chain.doFilter(request, response);
                return;
            }
        } else if (path.indexOf("/UUMS") > -1) {    
            chain.doFilter(request, response);
            return;
        }
    }
    
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        config = filterConfig;
        ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
        uaDictService =(UaDictService) ctx.getBean("uaDictService");
    }
}