RequestConverter.java
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package com.xiniunet.open.tool;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.xiniunet.apiframework.AbstractApiRequest;
import com.xiniunet.apiframework.response.ErrorResponse;
import com.xiniunet.apiframework.security.MainError;
import com.xiniunet.apiframework.security.SubError;
import com.xiniunet.apiframework.security.SubErrorType;
import com.xiniunet.apiframework.security.SubErrors;
import com.xiniunet.apiframework.session.Session;
import com.xiniunet.framework.base.BaseRequest;
import com.xiniunet.framework.security.Identity;
import com.xiniunet.framework.security.Passport;
import com.xiniunet.security.service.SecurityService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.validation.FieldError;
import org.springframework.validation.ObjectError;
import org.springframework.validation.Validator;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
import sun.misc.BASE64Decoder;
import javax.servlet.http.HttpServletRequest;
import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* ***************************************************************
* <p/>
* <pre>
* Copyright (c) 2014 –苏州犀牛网络科技有限公司
* Title: com.xiniunet.api.tool
* Description:
* ***************************************************************
* 2014/11/21 V1.0 xiniunet New Files for com.xiniunet.api.tool
* </pre>
*/
@Service
public class RequestConverter {
@Autowired
private SecurityService securityService;
private static Validator validator;
private static final Map<String, SubErrorType> INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS = new LinkedHashMap<String, SubErrorType>();
static {
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("typeMismatch",
SubErrorType.ISV_PARAMETERS_MISMATCH);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("NotNull",
SubErrorType.ISV_MISSING_PARAMETER);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("NotEmpty",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("Size",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("Range",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("Pattern",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("Min",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("Max",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("DecimalMin",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("DecimalMax",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("Digits",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("Past",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("Future",
SubErrorType.ISV_INVALID_PARAMETE);
INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS.put("AssertFalse",
SubErrorType.ISV_INVALID_PARAMETE);
}
/**
* 将参数转换为契约的Request对象
*
* @param clazz
* @param request
* @param <T>
* @return
*/
public <T> T converter(Class<T> clazz, AbstractApiRequest request) {
if (clazz != null) {
try {
T newT = (T) clazz.newInstance();
BeanInfo beanInfo = Introspector.getBeanInfo(clazz);
PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
Map<String, String> parameters = request.getApiRequestContext().getAllParams();
for (PropertyDescriptor property : propertyDescriptors) {
try {
String key = property.getName();
if (parameters.containsKey(key) && parameters.get(key) != null) {
Object value = parameters.get(key);
// 得到property对应的setter方法
Method setter = property.getWriteMethod();
//获取参数
Class<?> typeClass = property.getPropertyType();
if (String.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, value.toString());
} else if (Long.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, Long.valueOf(value.toString()));
} else if (int.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, Integer.valueOf(value.toString()));
} else if (boolean.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, Boolean.valueOf(value.toString()));
} else if (Boolean.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, Boolean.valueOf(value.toString()));
} else if (Double.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, Double.valueOf(value.toString()));
} else if (Integer.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, Integer.valueOf(value.toString()));
} else if (Long.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, Long.valueOf(value.toString()));
} else if (Float.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, Float.valueOf(value.toString()));
} else if (Short.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, Short.valueOf(value.toString()));
} else if (Number.class.isAssignableFrom(typeClass)) {
setter.invoke(newT, (Number) value);
} else if (Date.class.isAssignableFrom(typeClass)) {
DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
setter.invoke(newT, format.parse(value.toString()));
} else if (Enum.class.isAssignableFrom(typeClass)) {
Class<? extends Enum> enumType = (Class<Enum>) typeClass;
setter.invoke(newT, Enum.valueOf(enumType, value.toString()));
} else if (List.class.isAssignableFrom(typeClass)) {
//使用通用方法解决
Field field = getDeclaredField(clazz, key);
Type type = field.getGenericType();
Class genericClazz = null;
if (type instanceof ParameterizedType) {
ParameterizedType pt = (ParameterizedType) type;
try{
genericClazz = (Class) pt.getActualTypeArguments()[0];
}catch (Exception ex){
Class superClass = clazz.getSuperclass();
Field supplierField = getDeclaredField(superClass, key);
if(supplierField != null){
pt = (ParameterizedType) clazz.getGenericSuperclass();
genericClazz = (Class) pt.getActualTypeArguments()[0];
} else {
ex.printStackTrace();
}
}
}
if (genericClazz != null) {
//如果取不到泛型，则直接返回该数据为null
List list = JSON.parseArray(value.toString(), genericClazz);
setter.invoke(newT, list);
}
} else if (Set.class.isAssignableFrom(typeClass)) {
Field field = getDeclaredField(clazz, key);
Type type = field.getGenericType();
Class genericClazz = null;
if (type instanceof ParameterizedType) {
ParameterizedType pt = (ParameterizedType) type;
try{
genericClazz = (Class) pt.getActualTypeArguments()[0];
}catch (Exception ex){
Class superClass = clazz.getSuperclass();
Field supplierField = getDeclaredField(superClass, key);
if(supplierField != null){
pt = (ParameterizedType) clazz.getGenericSuperclass();
genericClazz = (Class) pt.getActualTypeArguments()[0];
} else {
ex.printStackTrace();
}
}
}
if (genericClazz != null) {
List list = JSON.parseArray(value.toString(), genericClazz);
Set set = new HashSet();
for (Object obj : list) {
set.add(obj);
}
setter.invoke(newT, set);
}
} else if (typeClass.isArray()) {
if(byte.class.equals(typeClass.getComponentType())){
BASE64Decoder decoder = new BASE64Decoder();
byte[] bytes = decoder.decodeBuffer(value.toString());
setter.invoke(newT,bytes);
} else {
//数组解包
JSONArray array = JSON.parseArray(value.toString());
Object[] jsonArray = array.toArray();
Object t = Array.newInstance(typeClass.getComponentType(), jsonArray.length);
for (int i = 0; i < jsonArray.length; i++) {
Array.set(t, i, jsonArray[i]);
}
setter.invoke(newT, t);
}
} else {
//非基本型参数，使用JSON格式化
Object obj = JSON.parseObject(value.toString(), typeClass);
setter.invoke(newT, obj);
}
}
}catch(Exception ex){
ex.printStackTrace();
}
}
return newT;
} catch (Exception e) {
e.printStackTrace();
}
}
return null;
}
public static Field getDeclaredField(Class<?> clazz, String fieldName){
Field field = null ;
for(; clazz != Object.class ; clazz = clazz.getSuperclass()) {
try {
field = clazz.getDeclaredField(fieldName) ;
return field ;
} catch (Exception e) {
//这里甚么都不要做！并且这里的异常必须这样写，不能抛出去。
//如果这里的异常打印或者往外抛，则就不会执行clazz = clazz.getSuperclass(),最后就不会进入到父类中了
}
}
return null;
}
/**
* 参数校验
*
* @param webRequest
* @param request
* @return
*/
public ErrorResponse doValidate(HttpServletRequest webRequest, BaseRequest request) {
// TODO 将ids转为List后，此处的验证无法通过，因为类型不匹配
return null;
// ServletRequestDataBinder dataBinder = new ServletRequestDataBinder(request, "bindObject");
// dataBinder.setValidator(getValidator());
// dataBinder.bind(webRequest);
// dataBinder.validate();
// List<ObjectError> errorList = dataBinder.getBindingResult().getAllErrors();
// // 将Bean数据绑定时产生的错误转换为Api的错误
// if (errorList != null && errorList.size() > 0) {
// return new ErrorResponse(toMainErrorOfSpringValidateErrors(errorList,
// webRequest.getLocale()));
// } else {
// return null;
// }
}
private MainError toMainErrorOfSpringValidateErrors(
List<ObjectError> allErrors, Locale locale) {
if (hastSubErrorType(allErrors, SubErrorType.ISV_MISSING_PARAMETER)) {
return getBusinessParameterMainError(allErrors, locale,
SubErrorType.ISV_MISSING_PARAMETER);
} else if (hastSubErrorType(allErrors,
SubErrorType.ISV_PARAMETERS_MISMATCH)) {
return getBusinessParameterMainError(allErrors, locale,
SubErrorType.ISV_PARAMETERS_MISMATCH);
} else {
return getBusinessParameterMainError(allErrors, locale,
SubErrorType.ISV_INVALID_PARAMETE);
}
}
private MainError getBusinessParameterMainError(
List<ObjectError> allErrors, Locale locale,
SubErrorType subErrorType) {
MainError mainError = SubErrors.getMainError(subErrorType, locale);
for (ObjectError objectError : allErrors) {
if (objectError instanceof FieldError) {
FieldError fieldError = (FieldError) objectError;
SubErrorType tempSubErrorType = INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS
.get(fieldError.getCode());
if (tempSubErrorType == subErrorType) {
String subErrorCode = SubErrors.getSubErrorCode(
tempSubErrorType, fieldError.getField(),
fieldError.getRejectedValue());
SubError subError = SubErrors.getSubError(subErrorCode,
tempSubErrorType.value(), locale,
fieldError.getField(),
fieldError.getRejectedValue());
mainError.addSubError(subError);
}
}
}
return mainError;
}
private boolean hastSubErrorType(List<ObjectError> allErrors,
SubErrorType subErrorType1) {
for (ObjectError objectError : allErrors) {
if (objectError instanceof FieldError) {
FieldError fieldError = (FieldError) objectError;
if (INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS
.containsKey(fieldError.getCode())) {
SubErrorType tempSubErrorType = INVALIDE_CONSTRAINT_SUBERROR_MAPPINGS
.get(fieldError.getCode());
if (tempSubErrorType == subErrorType1) {
return true;
}
}
}
}
return false;
}
private Validator getValidator() {
if (this.validator == null) {
LocalValidatorFactoryBean localValidatorFactoryBean = new LocalValidatorFactoryBean();
localValidatorFactoryBean.afterPropertiesSet();
this.validator = localValidatorFactoryBean;
}
return this.validator;
}
public Passport requestToPassport(AbstractApiRequest request) {
Session session = request.getApiRequestContext().getSession();
Passport passport = new Passport();
if(session!=null){
if(session.getAttribute("passport") != null){
passport = (Passport)session.getAttribute("passport");
}
}
return passport;
}
public Identity requestToIdentity(AbstractApiRequest request) {
Session session = request.getApiRequestContext().getSession();
Identity identity = new Identity();
if (session != null) {
identity = (Identity) session.getAttribute("identity");
}
return identity;
}
}