1、拦载器
package com.Interceptor;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.security.auth.login.LoginException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.lang3.StringUtils;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLDecoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
public class PayInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//获取进过拦截器的路径
String requestURI = request.getRequestURI();
String method = request.getMethod();
if ("POST".equals(method)) {
RequestBodyWrapper requestBodyWrapper = new RequestBodyWrapper(request);
String body = requestBodyWrapper.getBody();
System.out.println(body);
//数据处理
JSONObject requestJO = JSON.parseObject(body);
System.out.println(requestJO.getString("payItemNo"));
}
if ("GET".equals(method)) {
String queryString = request.getQueryString();
if (StringUtils.isNotEmpty(queryString)) {
String decodeUrl = URLDecoder.decode(queryString, "utf-8");
System.out.println(decodeUrl);
//String[] strs = decodeUrl.split("&");//拆分
//数据处理
Map<String, String> params = new HashMap<String, String>();
Map<String, String[]> requestParams = request.getParameterMap();
for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
String name = (String) iter.next();
String[] values = (String[]) requestParams.get(name);
String valueStr = "";
for (int i = 0; i < values.length; i++) {
valueStr = (i == values.length - 1) ? valueStr + values[i] : valueStr + values[i] + ",";
}
// 乱码解决，这段代码在出现乱码时使用。
// valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
params.put(name, valueStr);
}
System.out.println(params.get("dade"));
}
}
//放行
//return true;
//拦截
//response.sendRedirect(request.getContextPath() + "/login");
returnJson(response,"{\"code\":400,\"msg\":\"不合法\"}");
return false;
}
/*返回客户端数据*/
private void returnJson(HttpServletResponse response, String json) throws Exception{
PrintWriter writer = null;
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html; charset=utf-8");
try {
writer = response.getWriter();
writer.print(json);
} catch (IOException e) {
} finally {
if (writer != null)
writer.close();
}
}
@Override
public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
}
@Override
public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
}
}
2、使拦载器生效
package com.Interceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.FormatterRegistry;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.validation.MessageCodesResolver;
import org.springframework.validation.Validator;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.HandlerMethodReturnValueHandler;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.config.annotation.*;
import java.util.List;
@Configuration
public class PayMvcConfig implements WebMvcConfigurer {
@Override
public void configurePathMatch(PathMatchConfigurer pathMatchConfigurer) {
}
@Override
public void configureContentNegotiation(ContentNegotiationConfigurer contentNegotiationConfigurer) {
}
@Override
public void configureAsyncSupport(AsyncSupportConfigurer asyncSupportConfigurer) {
}
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer defaultServletHandlerConfigurer) {
}
@Override
public void addFormatters(FormatterRegistry formatterRegistry) {
}
@Override
public void addInterceptors(InterceptorRegistry interceptorRegistry) {
//注册拦载器，拦载全部，放行login和register
interceptorRegistry.addInterceptor(new PayInterceptor())
.addPathPatterns("/**")
.excludePathPatterns("/login", "/register");
}
@Override
public void addResourceHandlers(ResourceHandlerRegistry resourceHandlerRegistry) {
}
@Override
public void addCorsMappings(CorsRegistry corsRegistry) {
}
@Override
public void addViewControllers(ViewControllerRegistry viewControllerRegistry) {
}
@Override
public void configureViewResolvers(ViewResolverRegistry viewResolverRegistry) {
}
@Override
public void addArgumentResolvers(List<HandlerMethodArgumentResolver> list) {
}
@Override
public void addReturnValueHandlers(List<HandlerMethodReturnValueHandler> list) {
}
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> list) {
}
@Override
public void extendMessageConverters(List<HttpMessageConverter<?>> list) {
}
@Override
public void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> list) {
}
@Override
public void extendHandlerExceptionResolvers(List<HandlerExceptionResolver> list) {
}
@Override
public Validator getValidator() {
return null;
}
@Override
public MessageCodesResolver getMessageCodesResolver() {
return null;
}
}
3、post请求处理
package com.Interceptor;
import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import java.io.*;
public class RequestBodyWrapper extends HttpServletRequestWrapper {
private final String body;
public RequestBodyWrapper(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;
}
}
