springboot配置拦截器，在拦截器中获取@RequestBody注解参数和post请求参数以及get请求参数

落日映苍穹つ 2021-11-29 05:10 3531阅读 0赞

1.配置拦截器

package com.jy.gxw.config.interceptor;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
    import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
    
    import com.jy.common.base.event.IEventService;
    import com.jy.common.interceptor.EventInterceptor;
    
    /**
     * 系统中的拦截器配置
     * 
     * @author ShuoYuan
     *
     */
    @Configuration
    public class InterceptorConfigurer extends WebMvcConfigurerAdapter {
    	@Autowired
    	private IEventService eventService;
    
    	/**
    	 *      * 配置静态资源      
    	 */
    
    	public void addResourceHandlers(ResourceHandlerRegistry registry) {
    		registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
    		registry.addResourceHandler("/templates/**").addResourceLocations("classpath:/templates/");
    		super.addResourceHandlers(registry);
    	}
    
    	@Override
    	public void addInterceptors(InterceptorRegistry registry) {
    		// addPathPatterns 用于添加拦截规则
    		// excludePathPatterns 用于排除拦截
    		// 地址拦截器
    		registry.addInterceptor(new SessionInterceptor())
    		.addPathPatterns("/**")
    		.excludePathPatterns("/user/login") // 登录页
    		.excludePathPatterns("/api/code/get/pageCode");// 登陆验证码
    
    		super.addInterceptors(registry);
    		// 用户操作日志拦截器
    		registry.addInterceptor(new EventInterceptor(eventService));
    
    	}
    
    }

package com.jy.gxw.config.interceptor;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.web.servlet.ModelAndView;
    import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
    
    import java.util.HashMap;
    import java.util.Iterator;
    import java.util.Map;
    import java.util.Set;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import com.jy.gxw.util.JSONUtils;
    
    /**
     * Created by 20160216 on 2018/2/8.
     */
    public class SessionInterceptor extends HandlerInterceptorAdapter {
    	private Logger logger = LoggerFactory.getLogger(SessionInterceptor.class);
    
    	// 拦截前处理
    	@Override
    	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception {
    		System.out.println("经过拦截器拦截前处理啦。。。。。");
    		try {
    			RequestWrapper requestWrapper = new RequestWrapper(request);
    			// 获取@RequestBody注解参数和post请求参数
    			String body = requestWrapper.getBody();
    			System.out.println("拦截器输出body：" + body);
    			System.out.println("uri=" + request.getRequestURI());
    			// 获取get请求参数
    			Map<String, String[]> ParameterMap = request.getParameterMap();
    			System.out.println("参数个数：" + ParameterMap.size());
    			Map reqMap = new HashMap();
    			Set<Map.Entry<String, String[]>> entry = ParameterMap.entrySet();
    			Iterator<Map.Entry<String, String[]>> it = entry.iterator();
    			while (it.hasNext()) {
    				Map.Entry<String, String[]> me = it.next();
    				String key = me.getKey();
    				String value = me.getValue()[0];
    				reqMap.put(key, value);
    			}
    			String queryString = JSONUtils.JsonToString(JSONUtils.MapToJson(reqMap));
    			System.out.println(queryString);
    			// 不做拦截的地址
    			if (request.getRequestURI().equals("/api/code/get/pageCode")) {
    				return true;
    			}
    			// 验证session是否存在
    			Object obj = request.getSession().getAttribute("_session_user");
    			if (obj == null) {
    				response.sendRedirect("/user/login_view");//重定向
    				return false;
    			}
    			return true;
    		} catch (Exception e) {
    			logger.error("权限判断出错", e);
    		}
    		return false;
    	}
    
    	// 拦截后处理
    	@Override
    	public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o,
    			ModelAndView modelAndView) throws Exception {
    
    	}
    
    	// 全部完成后处理
    	@Override
    	public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse,
    			Object o, Exception e) throws Exception {
    
    	}
    }

package com.jy.gxw.config.interceptor;
    import javax.servlet.ReadListener;
    import javax.servlet.ServletInputStream;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletRequestWrapper;
    import java.io.*;
    
    public class RequestWrapper extends HttpServletRequestWrapper {
        private final String body;
    
        public RequestWrapper(HttpServletRequest request) {
            super(request);
            StringBuilder stringBuilder = new StringBuilder();
            BufferedReader bufferedReader = null;
            InputStream inputStream = null;
            try {
                inputStream = request.getInputStream();
                if (inputStream != null) {
                    bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
                    char[] charBuffer = new char[128];
                    int bytesRead = -1;
                    while ((bytesRead = bufferedReader.read(charBuffer)) > 0) {
                        stringBuilder.append(charBuffer, 0, bytesRead);
                    }
                } else {
                    stringBuilder.append("");
                }
            } catch (IOException ex) {
    
            } finally {
                if (inputStream != null) {
                    try {
                        inputStream.close();
                    }
                    catch (IOException e) {
                        e.printStackTrace();
                    }
                }
                if (bufferedReader != null) {
                    try {
                        bufferedReader.close();
                    }
                    catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            body = stringBuilder.toString();
        }
    
        @Override
        public ServletInputStream getInputStream() throws IOException {
            final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(body.getBytes());
            ServletInputStream servletInputStream = new ServletInputStream() {
                @Override
                public boolean isFinished() {
                    return false;
                }
                @Override
                public boolean isReady() {
                    return false;
                }
                @Override
                public void setReadListener(ReadListener readListener) {
                }
                @Override
                public int read() throws IOException {
                    return byteArrayInputStream.read();
                }
            };
            return servletInputStream;
    
        }
    
        @Override
        public BufferedReader getReader() throws IOException {
            return new BufferedReader(new InputStreamReader(this.getInputStream()));
        }
    
        public String getBody() {
            return this.body;
        }
    
    }

package com.jy.gxw.util;
    import java.util.HashMap;
    import java.util.Map;
    
    import com.alibaba.druid.util.StringUtils;
    import com.alibaba.fastjson.JSON;
    import com.alibaba.fastjson.JSONObject;
    
    
    public class JSONUtils {
        /**
         * Bean对象转JSON
         * 
         * @param object
         * @param dataFormatString
         * @return
         */
        public static String beanToJson(Object object, String dataFormatString) {
            if (object != null) {
                if (StringUtils.isEmpty(dataFormatString)) {
                    return JSONObject.toJSONString(object);
                }
                return JSON.toJSONStringWithDateFormat(object, dataFormatString);
            } else {
                return null;
            }
        }
    
        /**
         * Bean对象转JSON
         * 
         * @param object
         * @return
         */
        public static String beanToJson(Object object) {
            if (object != null) {
                return JSON.toJSONString(object);
            } else {
                return null;
            }
        }
    
        /**
         * String转JSON字符串
         * 
         * @param key
         * @param value
         * @return
         */
        public static String stringToJsonByFastjson(String key, String value) {
            if (StringUtils.isEmpty(key) || StringUtils.isEmpty(value)) {
                return null;
            }
            Map<String, String> map = new HashMap<String, String>();
            map.put(key, value);
            return beanToJson(map, null);
        }
    
        /**
         * 将json字符串转换成对象
         * 
         * @param json
         * @param clazz
         * @return
         */
        public static Object jsonToBean(String json, Object clazz) {
            if (StringUtils.isEmpty(json) || clazz == null) {
                return null;
            }
            return JSON.parseObject(json, clazz.getClass());
        }
    
        /**
         * json字符串转map
         * 
         * @param json
         * @return
         */
        @SuppressWarnings("unchecked")
        public static Map<String, Object> jsonToMap(String json) {
            if (StringUtils.isEmpty(json)) {
                return null;
            }
            return JSON.parseObject(json, Map.class);
        }
        
        public static JSONObject MapToJson(Map m){
        	JSONObject json = new JSONObject(m);
        	return json;
        }
        
        public static String JsonToString(JSONObject json){
        	return json.toJSONString();
        }
        
        
    }

package com.jy.gxw.config.filter;
    
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.util.ArrayList;
    
    import java.util.List;
    
    
    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 org.apache.commons.lang3.StringUtils;
    import org.apache.logging.log4j.LogManager;
    import org.apache.logging.log4j.Logger;
    
    import com.jy.gxw.config.interceptor.RequestWrapper;
    
    /**
     * 
     * 非法字符过滤器（防SQL注入，防XSS漏洞）
     * 
     * 
     */
    public class XssFilter implements Filter {
    	private static final Logger logger = LogManager.getLogger(XssFilter.class);
    
    	/**
    	 * 排除部分URL不做过滤
    	 */
    	private List<String> excludeUrls = new ArrayList<String>();
    
    	/**
    	 * 公告新增、修改用到富文本，对标签进行转义
    	 */
    	private List<String> noticeUrls = new ArrayList<String>();
    
    	public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
    			throws IOException, ServletException {
    		logger.info("================进入过滤器======================");
    		HttpServletResponse response = (HttpServletResponse) arg1;
    		ServletRequest req = null;
            if(arg0 instanceof HttpServletRequest) {
            	req = new RequestWrapper((HttpServletRequest) arg0);
            	// 获取@RequestBody注解参数和post请求参数
            	String body = ((RequestWrapper) req).getBody();
            	System.out.println("过滤器输出body：" + body);
        		HttpServletRequest req1 = (HttpServletRequest) req;
        		String pathInfo = req1.getPathInfo() == null ? "" : req1.getPathInfo();
        		String url = req1.getServletPath() + pathInfo;
        		String uri = req1.getRequestURI();
        		boolean isNoticeUrl = false;
        		// 排除部分URL不做过滤。
        		for (String str : excludeUrls) {
        			if (uri.indexOf(str) >= 0) {
        				logger.info("该URL不作校验：" + url);
        				arg2.doFilter(req, response);
        				return;
        			}
        		}
        		for (String st : noticeUrls) {
        			if (uri.indexOf(st) >= 0) {
        				isNoticeUrl = true;
        				break;
        			}
        		}
        		List<String> ll=getvalue(body);
        		// 获取请求所有参数值，校验防止SQL注入，防止XSS漏洞
        		if(ll!=null){
        		for(String ss:ll) {
        			// 校验是否存在SQL注入信息
        			if (checkSQLInject(ss, url)) {
        				errorResponse(response, ss);
        				return;
        			}
        		}}
            }
            if(req == null) {
            	arg2.doFilter(arg0, response);
            } else {
            	arg2.doFilter(req, response);
            }
    	}
        public  List<String> getvalue(String str){
        	int len=str.length();
        	if(len>5){
        		List<String> l=new ArrayList<String>();
            	for(int i=0;i<len;i++){
            		if(str.charAt(i)==':'){
            			i++;
            			if(str.charAt(i)=='"'){
            				int ii=str.indexOf('"', i+1);
            				l.add(str.substring(i+1, ii));
            				i=ii;
            			}
            		}
            	}
            	return l;
        	}
        	else return null;	
        }
    	private void errorResponse(HttpServletResponse response, String paramvalue) throws IOException {
    		String warning = "输入项中不能包含非法字符。";
    
    		response.setContentType("text/html; charset=UTF-8");
    		PrintWriter out = response.getWriter();
    
    		out.println("{\"httpCode\":\"-9998\",\"msg\":\"" + warning + "\", \"输入值\": \"" +paramvalue + "\"}");
    		out.flush();
    		out.close();
    	}
    
    	public void destroy() {
    	}
    
    	public void init(FilterConfig filterconfig1) throws ServletException {
    		// 读取文件
    		String path = XssFilter.class.getResource("/").getFile();
    		excludeUrls = readFile(path + "xssWhite.txt");
    		noticeUrls.add("notice!saveNotice");
    		noticeUrls.add("notice!updateNoticeById");
    	}
    
    	/**
    	 * 读取白名单
    	 * 
    	 * @param fileName
    	 * @return
    	 */
    	private List<String> readFile(String fileName) {
    		List<String> list = new ArrayList<String>();
    		BufferedReader reader = null;
    		FileInputStream fis = null;
    		try {
    			File f = new File(fileName);
    			if (f.isFile() && f.exists()) {
    				fis = new FileInputStream(f);
    				reader = new BufferedReader(new InputStreamReader(fis, "UTF-8"));
    				String line;
    				while ((line = reader.readLine()) != null) {
    					if (!"".equals(line)) {
    						list.add(line);
    					}
    				}
    			}
    		} catch (Exception e) {
    			logger.error("readFile", e);
    		} finally {
    			try {
    				if (reader != null) {
    					reader.close();
    				}
    			} catch (IOException e) {
    				logger.error("InputStream关闭异常", e);
    			}
    			try {
    				if (fis != null) {
    					fis.close();
    				}
    			} catch (IOException e) {
    				logger.error("FileInputStream关闭异常", e);
    			}
    		}
    		return list;
    	}
    
    	private String xssEncode(String s) {
    		if (s == null || s.isEmpty()) {
    			return s;
    		}
    		/*s.replaceAll("||", "");
    		s.replaceAll("|", "");
    		s.replaceAll(regex, replacement)*/
    		StringBuilder sb = new StringBuilder(s.length() + 16);
    		for (int i = 0; i < s.length(); i++) {
    			char c = s.charAt(i);
    			switch (c) {
    			case '>':
    				sb.append('＞');// 全角大于号
    				break;
    			case '<':
    				sb.append('＜');// 全角小于号
    				break;
    			case '\'':
    				sb.append('‘');// 全角单引号
    				break;
    			case '\"':
    				sb.append('“');// 全角双引号
    				break;
    			case '&':
    				sb.append('＆');// 全角
    				break;
    			case '\\':
    				sb.append('＼');// 全角斜线
    				break;
    			case '#':
    				sb.append('＃');// 全角井号
    				break;
    			case '(':
    				sb.append('（');//
    				break;
    			case ')':
    				sb.append('）');//
    				break;
    			default:
    				sb.append(c);
    				break;
    			}
    		}
    		return sb.toString();
    	}
    
    	/**
    	 * 
    	 * 检查是否存在非法字符，防止SQL注入
    	 * 
    	 * @param str
    	 *            被检查的字符串
    	 * @return ture-字符串中存在非法字符，false-不存在非法字符
    	 */
    	public static boolean checkSQLInject(String str, String url) {
    		if (StringUtils.isEmpty(str)) {
    			return false;// 如果传入空串则认为不存在非法字符
    		}
    
    		// 判断黑名单
    		String[] inj_stra = { "script", "mid", "master", "truncate", "insert", "select", "delete", "update", "declare",
    				"iframe", "'", "onreadystatechange", "alert", "atestu", "xss", ";", "'", "\"", "<", ">", "(", ")", ",",
    				"\\", "svg", "confirm", "prompt", "onload", "onmouseover", "onfocus", "onerror" };
    
    		str = str.toLowerCase(); // sql不区分大小写
    
    		for (int i = 0; i < inj_stra.length; i++) {
    			if (str.indexOf(inj_stra[i]) >= 0) {
    				logger.info("xss防攻击拦截url:" + url + "，原因：特殊字符，传入str=" + str + ",包含特殊字符：" + inj_stra[i]);
    				return true;
    			}
    		}
    		return false;
    	}
    }