ApiSignInterceptor.java
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package com.infoloop.tianting.intercepter;
import cn.dev33.satoken.sign.SaSignUtil;
import cn.hutool.core.convert.Convert;
import com.infoloop.tianting.annotation.ApiEnterpriseParam;
import com.infoloop.tianting.annotation.ApiSign;
import com.infoloop.tianting.context.LoginContextHolder;
import com.infoloop.tianting.exception.ClientEndExceptions;
import com.infoloop.tianting.filter.CachedBodyHttpServletRequest;
import com.infoloop.tianting.utils.RequestUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;
@Slf4j
@Component
@SuppressWarnings("all")
public class ApiSignInterceptor implements HandlerInterceptor {
private static final String TIMESTAMP = "timestamp";
private static final String NONCE = "nonce";
private static final String SIGN = "sign";
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException {
if (!(handler instanceof HandlerMethod)) {
return true;
}
HandlerMethod method = (HandlerMethod) handler;
if (!method.hasMethodAnnotation(ApiSign.class)) {
return true;
}
final var annotation = method.getMethodAnnotation(ApiSign.class);
final var paramMap = getParamMap(annotation, request);
SaSignUtil.checkParamMap(paramMap);
setCurrentEnterpriseId(request, annotation.enterpriseParam(), paramMap);
return true;
}
private void setCurrentEnterpriseId(HttpServletRequest request, ApiEnterpriseParam enterpriseParam, Map<String, String> paramMap) {
var enterpriseId = paramMap.get(enterpriseParam.value());
if (enterpriseId == null && enterpriseParam.isReadHeader()) {
enterpriseId = request.getHeader(enterpriseParam.value());
}
if (enterpriseId == null && enterpriseParam.required()) {
throw ClientEndExceptions.ParameterInvalid.build(enterpriseParam.value() + " cannot be null");
}
if (enterpriseId != null) {
LoginContextHolder.setRequestEnterpriseId(Convert.toInt(enterpriseId));
}
}
private Map<String, String> getParamMap(ApiSign annotation, HttpServletRequest request) throws IOException {
Map<String, String> paramMap = new TreeMap<>();
switch (annotation.readFrom()) {
case ALL:
paramMap.putAll(RequestUtil.getFormParameters(request));
if (isJson(request)) {
final var bodyMap = ((CachedBodyHttpServletRequest) request).getBodyMap();
paramMap.putAll(convertMapToStringValue(bodyMap));
}
break;
case QUERY:
paramMap.putAll(RequestUtil.getFormParameters(request));
break;
case BODY:
if (isJson(request)) {
final var bodyMap = ((CachedBodyHttpServletRequest) request).getBodyMap();
paramMap.putAll(convertMapToStringValue(bodyMap));
}
break;
}
if (annotation.paramNames().length != 0) {
paramMap = takeRequestParam(paramMap, annotation.paramNames());
}
return paramMap;
}
private Map<String, String> convertMapToStringValue(Map<String, Object> originalMap) {
Map<String, String> stringMap = new HashMap<>();
for (Map.Entry<String, Object> entry : originalMap.entrySet()) {
final var value = entry.getValue();
if (value == null) {
continue;
}
if (value instanceof String) {
stringMap.put(entry.getKey(), (String) value);
} else {
stringMap.put(entry.getKey(), String.valueOf(value));
}
}
return stringMap;
}
private boolean isJson(HttpServletRequest request) {
if (request.getContentType() != null) {
return request.getContentType().contains(MediaType.APPLICATION_JSON_VALUE);
}
return false;
}
private Map<String, String> takeRequestParam(Map<String, String> map, String[] paramNames) {
Map<String, String> paramMap = new TreeMap<>();
paramMap.put(TIMESTAMP, map.get(TIMESTAMP));
paramMap.put(NONCE, map.get(NONCE));
paramMap.put(SIGN, map.get(SIGN));
for (String paramName : paramNames) {
paramMap.put(paramName, map.get(paramName));
}
return paramMap;
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
LoginContextHolder.clear();
}
}