注入过滤器(备份request信息)
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import java.io.*;
@Component
@WebFilter(urlPatterns = "
return true;
} catch (Exception e) {
response.setContentType("application/json; charset=utf-8");
PrintWriter out = null ;
Map requestFalse = new HashMap<>();
requestFalse.put("code","401");
requestFalse.put("msg","请求出错");
response.setContentType("application/json");
String jsonStr= JSONObject.toJSONString(requestFalse).toString();
out = response.getWriter();
out.append(jsonStr);
out.flush();
logger.error("请求出错", 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 {
}
}
获取post请求信息方法
public static byte[] getRequestPostBytes(HttpServletRequest request) throws IOException {
int contentLength = request.getContentLength();
if (contentLength < 0) {
return null;
}
byte buffer[] = new byte[contentLength];
for (int i = 0; i < contentLength;) {
int readlen = request.getInputStream().read(buffer, i, contentLength - i);
if (readlen == -1) {
break;
}
i += readlen;
}
return buffer;
}
备份request信息方法
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;
}
}
拦截器配置
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpHeaders;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class CorsConfig implements WebMvcConfigurer {
@Bean
public WebMvcConfigurer corsConfigurer()
{
return new WebMvcConfigurer() {
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**").
allowedOrigins("*"). //允许跨域的域名,可以用*表示允许任何域名使用
allowedMethods("*"). //允许任何方法(post、get等)
allowedHeaders("*"). //允许任何请求头
allowCredentials(true). //带上cookie信息
exposedHeaders(HttpHeaders.SET_cookie).maxAge(3600L); //maxAge(3600)表明在3600秒内,不需要再发送预检验请求,可以缓存该结果
}
};
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new ParamInterceptor()).addPathPatterns("/System/**").addPathPatterns("/svs/**");
}
}