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com.yanyun.go.utils.MethodUtils Maven / Gradle / Ivy
package com.yanyun.go.utils;
import com.google.common.base.Optional;
import org.springframework.http.HttpMethod;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestBody;
import springfox.documentation.service.Parameter;
import springfox.documentation.service.ResolvedMethodParameter;
import springfox.documentation.spi.service.contexts.OperationContext;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.List;
import java.util.Stack;
import java.util.stream.Collectors;
/**
* 根据请求方法返回请求方式的工具类
*/
public class MethodUtils {
public static String getMethodApi(OperationContext context) {
//获取请求的类型
String methodType = context.httpMethod().name();
//获取请求地址
String requestMappingPattern = context.requestMappingPattern();
//获取请求参数列表
List parameters = context.getParameters();
//如果是Get请求
if (HttpMethod.GET.matches(methodType)) {
return dealGetAndDeleteMethod(requestMappingPattern, parameters, "Get");
}
//如果是Delete请求
if (HttpMethod.DELETE.matches(methodType)) {
return dealGetAndDeleteMethod(requestMappingPattern, parameters, "Delete");
}
//如果是Post请求
if (HttpMethod.POST.matches(methodType)) {
return dealPostAndPutMethod(context, "Post");
}
//如果是Put请求
if (HttpMethod.PUT.matches(methodType)) {
return dealPostAndPutMethod(context, "Put");
}
return "该[" + methodType + "]请求方式暂未收录,请自行编写Go测试";
}
/**
* 处理TypeB类型的URI
* 将原来类型 /{a}/{b}类型 转化为 /A/B
*
* @param typeB
* @return
*/
private static String dealTypeBURI(String typeB) {
//压栈
Stack firstStack = new Stack<>();
StringBuffer result = new StringBuffer();
for (int i = 0; i < typeB.length(); i++) {
String singleStr = typeB.substring(i, i + 1);
if (singleStr.equals("}")) {
//弹栈
StringBuffer temp = new StringBuffer();
boolean flag = true;
while (flag) {
String pop = firstStack.pop();
if (!pop.equals("{")) {
temp.append(pop);
} else {
flag = false;
}
}
//弹出的数据
String upperCase = temp.reverse().toString().toUpperCase();
for (int j = 0; j 0; i--) {
result.append(firstStack.pop());
}
return result.reverse().toString();
}
public static void main(String[] args) {
String path = "/test/get/{name}/{age}/path";
System.out.println(dealTypeBURI(path));
}
/**
* 处理Get或者Delete的返回
*
* @param requestMappingPattern 如果是GET,进行匹配Get的请求：目前分为 A B 两种方式:
* A 为 ?xx=xx&xxx=xxx
* B 为 /a/b/c
* @return
*/
private static String dealGetAndDeleteMethod(String requestMappingPattern, List parameters, String methodType) {
int size = parameters.size();
if (size == 0) {
//如果没有参数,那么默认使用A方式
return methodType + "A(\"" + requestMappingPattern + "\")";
} else {
//否则需要传递参数
//传递参数
if (requestMappingPattern.contains("{")) {
//如果是path参数,直接返回B的方式
return methodType + "B(\"" + dealTypeBURI(requestMappingPattern) + "\")";
} else {
//否则不是,需要返回A的方式
StringBuffer suffix = new StringBuffer();
parameters.forEach(p -> {
suffix.append("&" + p.defaultName().get() + "=");
});
//进行处理
suffix.delete(0, 1);
return methodType + "A(\"" + requestMappingPattern + "?" + suffix.toString() + "\")";
}
}
}
/**
* 处理Post或者Put请求
* 目前请求分为3类 A B C
* A: 为 ?xx=xxx
* B: 为 /a/b/c
* C: 为 请求体中传递JSON数据
*
* @return
*/
private static String dealPostAndPutMethod(OperationContext context, String methodType) {
//获取参数集合
List parameters = context.getParameters();
//获取请求路径
String requestMappingPattern = context.requestMappingPattern();
int size = parameters.size();
if (size == 0) {
//如果没有参数,那么默认使用A方式
return methodType + "A(\"" + requestMappingPattern + "\")";
} else {
//如果有参数,那么需要判断参数类型
if (requestMappingPattern.contains("{")) {
//如果是path参数,直接返回B的方式
return methodType + "B(\"" + dealTypeBURI(requestMappingPattern) + "\")";
} else {
//判断参数 是否包含注解 @RequestBody,如果没有则使用A方式,如果有则使用C方式
boolean flag = false;
for (int i = 0; i < parameters.size(); i++) {
Optional annotation = parameters.get(i).findAnnotation(RequestBody.class);
if (annotation.isPresent()) {
//如果存在该注解,那么证明传递的是JSON数据
flag = true;
}
}
if (!flag) {
//如果是普通？传参
StringBuffer pathParams = new StringBuffer();
context.operationBuilder().build().getParameters().forEach(p -> {
if (!"header".equalsIgnoreCase(p.getParamType())) {
//排除头参数
pathParams.append("&" + p.getName() + "=");
}
});
pathParams.delete(0, 1);
return methodType + "A(\"" + requestMappingPattern + "?" + pathParams.toString() + "\")";
} else {
//否则为PostC的方式进行调用，并且目前只分析参数列表中只有一种 requestBody的测试
List params = context.operationBuilder().build().getParameters();
List paramList = params.stream().filter(p -> !"header".equalsIgnoreCase(p.getParamType())).collect(Collectors.toList());
//接收参数 @requestBody 只有一个
Parameter param = paramList.get(0);
//最终封装的结果
StringBuffer result = new StringBuffer();
//获得头
result.append(toCamelName(param.getName()) + "{ \n");
//增加中间请求体
StringBuffer paramBody = converterParamToBody(param);
result.append(paramBody);
//封装尾部
result.append("}");
return methodType + "C(\"" + requestMappingPattern + "\"," + result.toString() + ")";
}
}
}
}
/**
* 将参数列表转换为Body类型
*
* @param parameter
* @return
*/
private static StringBuffer converterParamToBody(Parameter parameter) {
StringBuffer params = new StringBuffer();
//得到实体类型
String paramType = parameter.getType().get().getTypeName();
//反射实体
try {
Class rootClass = Class.forName(paramType);
//得到声明的字段
Field[] declaredFields = rootClass.getDeclaredFields();
//循环遍历字段
Arrays.asList(declaredFields).forEach(field -> {
//递归调用拼接字符串到params中
recursionParams(field, params, paramType);
});
} catch (ClassNotFoundException e) {
// e.printStackTrace();
}
if (!StringUtils.isEmpty(params.toString())) {
//去掉最后一个逗号
params.deleteCharAt(params.lastIndexOf(","));
}
return params;
}
/**
* 递归字段,将数据回写到params中
*
* @param field
* @param params
*/
private static void recursionParams(Field field, StringBuffer params, String paramType) {
//获取字段类型
Class type = field.getType();
//获取字段的简单类名
String simpleName = type.getSimpleName();
//获取全类名
String typeName = type.getName();
//1.基本类型
if (isSimpleType(simpleName)) {
//如果是简单类型
params.append("\n" + toCamelName(field.getName()) + " : " + JavaTypeToGoType(simpleName) + ",");
return;
}
//2.数组类型
if (isArrayType(typeName)) {
//a、数组中放置的是简单类型
if (isSimpleArrayType(simpleName)) {
//直接拼接
String goType = JavaTypeToGoType(simpleName.substring(0, simpleName.lastIndexOf("[")));
params.append("\n" + toCamelName(field.getName()) + " : []" + goType + "{" + goType + "},");
return;
} else {
//b、不是简单类型数组，按照是DTO的数组进行分析
//进行再次反射
try {
if (!typeName.equalsIgnoreCase(paramType)) {
Class aClass = Class.forName(typeName);
StringBuffer fieldParams = new StringBuffer();
Arrays.asList(aClass.getDeclaredFields()).forEach(f -> {
recursionParams(f, fieldParams, f.getType().getName());
});
params.append("\n" + toCamelName(field.getName()) + " : []" + simpleName.substring(0, simpleName.indexOf("[")) + "{" + fieldParams + "},");
return;
}
params.append("\n" + toCamelName(field.getName()) + " : []" + simpleName.substring(0, simpleName.indexOf("[")) + "{" + simpleName.substring(0, simpleName.indexOf("[")) + "},");
return;
//不能去掉数组种最后一个逗号
// fieldParams.deleteCharAt(fieldParams.lastIndexOf(","));
// String goType = JavaTypeToGoType(simpleName.substring(0, simpleName.lastIndexOf("[")));
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
//3.普通List、Set集合类型
if (isCollectionType(typeName)) {
//获取集合中的泛型
Type genericType = field.getGenericType();
if (genericType != null && genericType instanceof ParameterizedType) {
//如果有泛型,那么按照泛型进行分析
ParameterizedType pType = (ParameterizedType) genericType;
Type[] actualTypeArguments = pType.getActualTypeArguments();
if (actualTypeArguments != null && actualTypeArguments.length > 0) {
//取第一个泛型类
Type actualTypeArgument = actualTypeArguments[0];
//获取类型
String argumentType = actualTypeArgument.getTypeName();
if (argumentType.contains("java.util") && (argumentType.contains("List") || argumentType.contains("Set"))) {
//如果泛型中依旧包含集合,此处只允许二级集合
String substring = argumentType.substring(argumentType.indexOf("<") + 1);
String truthStr = substring.substring(0, substring.indexOf(">"));
String truthSimpleName = truthStr.substring(truthStr.lastIndexOf(".") + 1);
if (isSimpleType(truthSimpleName)) {
String goType = JavaTypeToGoType(truthSimpleName);
params.append("\n" + toCamelName(field.getName()) + " : [][]" + goType + "{[" + goType + "]},");
} else {
try {
Class aClass = Class.forName(truthStr);
if (truthStr.equalsIgnoreCase(paramType)) {
//如果是本身的类型
params.append("\n" + toCamelName(field.getName()) + " : [][]" + truthSimpleName + "{[" + truthSimpleName + "]},");
} else {
StringBuffer fieldParams = new StringBuffer();
Arrays.asList(aClass.getDeclaredFields()).forEach(f -> {
recursionParams(f, fieldParams, f.getType().getName());
});
params.append("\n" + toCamelName(field.getName()) + " : [][]" + truthSimpleName + "{[" + truthSimpleName + "]},");
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
//出现异常的话,将swagger长类型写上去
params.append("\n" + toCamelName(field.getName()) + " : [][]" + argumentType + "{[" + argumentType + "]},");
}
}
return;
}
Class aClass = (Class) actualTypeArgument;
if (isSimpleType(aClass.getSimpleName())) {
//如果是普通类型
String goType = JavaTypeToGoType(aClass.getSimpleName());
params.append("\n" + toCamelName(field.getName()) + " : []" + goType + "{" + goType + "},");
return;
}
if (aClass.getName().equalsIgnoreCase(paramType)) {
//如果是本身的类型
params.append("\n" + toCamelName(field.getName()) + " : []" + aClass.getSimpleName() + "{[" + aClass.getSimpleName() + "]},");
return;
}
//泛型承载的参数
StringBuffer fieldParams = new StringBuffer();
Arrays.asList(aClass.getDeclaredFields()).forEach(f -> {
recursionParams(f, fieldParams, f.getType().getName());
});
//不能去掉最后一个逗号
//fieldParams.deleteCharAt(fieldParams.lastIndexOf(","));
String simplePName = aClass.getSimpleName();
String goType = JavaTypeToGoType(simplePName);
if ("unknown".equalsIgnoreCase(goType)) {
goType = simplePName;
}
params.append("\n" + toCamelName(field.getName()) + " : []" + goType + "{" + fieldParams + "},");
return;
}
} else {
//如果没有泛型,按照Object类型进行分析
params.append("\n" + toCamelName(field.getName()) + " : []interface{},");
return;
}
}
//4.Map类型
if (isMapCollection(typeName)) {
//获取泛型
Type genericType = field.getGenericType();
if (genericType != null && genericType instanceof ParameterizedType) {
//如果有泛型,那么按照泛型进行分析
ParameterizedType pType = (ParameterizedType) genericType;
Type[] actualTypeArguments = pType.getActualTypeArguments();
if (actualTypeArguments != null && actualTypeArguments.length > 0) {
//Map一般有2种泛型
//取第一个泛型类,并进行转换
Class aClass = (Class) actualTypeArguments[0];
String aName = JavaTypeToGoType(aClass.getSimpleName());
if ("unknown".equalsIgnoreCase(aName)) {
aName = aClass.getSimpleName();
}
//第二个泛型
Class bClass = (Class) actualTypeArguments[1];
String bName = JavaTypeToGoType(bClass.getSimpleName());
if ("unknown".equalsIgnoreCase(bName)) {
bName = bClass.getSimpleName();
}
//参数拼接
params.append("\n" + toCamelName(field.getName()) + " : map[" + aName + "]" + bName + "{},");
return;
}
}
}
//5、自定义DTO类型
try {
Class aClass = Class.forName(typeName);
if (aClass.equals(Object.class)) {
//如果是Object,拼接
params.append("\n" + toCamelName(field.getName()) + " : interface{},");
return;
} else {
if (aClass.getName().equalsIgnoreCase(paramType)) {
//如果是本身的类型
params.append("\n" + toCamelName(field.getName()) + " : []" + aClass.getSimpleName() + "{" + aClass.getSimpleName() + "},");
return;
}
StringBuffer fieldParams = new StringBuffer();
Arrays.asList(aClass.getDeclaredFields()).forEach(f -> {
recursionParams(f, fieldParams, f.getType().getName());
});
//不能去掉最后一个逗号
// fieldParams.deleteCharAt(fieldParams.lastIndexOf(","));
params.append("\n" + toCamelName(field.getName()) + " : {" + fieldParams + "},");
return;
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
/**
* 将传递的字符串进行首字母大写
*
* @param originName
* @return
*/
private static String toCamelName(String originName) {
if (!StringUtils.isEmpty(originName)) {
String upperCase = originName.substring(0, 1).toUpperCase();
originName = upperCase + originName.substring(1);
}
return originName;
}
/**
* 判断类型 是否为普通类型
*
* @return
*/
public static boolean isSimpleType(String typeName) {
boolean flag = false;
if (typeName.equalsIgnoreCase("int")
|| typeName.equalsIgnoreCase("Integer")
|| typeName.equalsIgnoreCase("byte")
|| typeName.equalsIgnoreCase("Byte")
|| typeName.equalsIgnoreCase("long")
|| typeName.equalsIgnoreCase("Long")
|| typeName.equalsIgnoreCase("double")
|| typeName.equalsIgnoreCase("Double")
|| typeName.equalsIgnoreCase("float")
|| typeName.equalsIgnoreCase("Float")
|| typeName.equalsIgnoreCase("char")
|| typeName.equalsIgnoreCase("Character")
|| typeName.equalsIgnoreCase("short")
|| typeName.equalsIgnoreCase("Short")
|| typeName.equalsIgnoreCase("boolean")
|| typeName.equalsIgnoreCase("Boolean")
|| typeName.equalsIgnoreCase("String") //增加String类型
|| typeName.equalsIgnoreCase("Date")
) {
//如果是基本类型，那么返回true
flag = true;
}
return flag;
}
/**
* 判断是否是数组
*
* @param typeName
* @return
*/
public static boolean isArrayType(String typeName) {
boolean flag = false;
if (typeName.contains("[")) {
//如果包含数组括号,那么认定为数组
flag = true;
}
return flag;
}
/**
* 判断是否为普通数组类型
*
* @param typeName
* @return
*/
public static boolean isSimpleArrayType(String typeName) {
boolean flag = false;
if (typeName.equalsIgnoreCase("int[]")
|| typeName.equalsIgnoreCase("Integer[]")
|| typeName.equalsIgnoreCase("byte[]")
|| typeName.equalsIgnoreCase("Byte[]")
|| typeName.equalsIgnoreCase("long[]")
|| typeName.equalsIgnoreCase("Long[]")
|| typeName.equalsIgnoreCase("double[]")
|| typeName.equalsIgnoreCase("Double[]")
|| typeName.equalsIgnoreCase("float[]")
|| typeName.equalsIgnoreCase("Float[]")
|| typeName.equalsIgnoreCase("char[]")
|| typeName.equalsIgnoreCase("Character[]")
|| typeName.equalsIgnoreCase("short[]")
|| typeName.equalsIgnoreCase("Short[]")
|| typeName.equalsIgnoreCase("boolean[]")
|| typeName.equalsIgnoreCase("Boolean[]")
|| typeName.equalsIgnoreCase("String[]") //增加String类型
) {
//如果是基本类型，那么返回true
flag = true;
}
return flag;
}
/**
* 判断是否是为普通集合类型
*
* @param typeName
* @return
*/
public static boolean isCollectionType(String typeName) {
boolean flag = false;
//判断是否是 java.util包下，名称中是否包含List、Set关键字
if (typeName.contains("java.util")) {
if (typeName.contains("Set") || typeName.contains("List")) {
flag = true;
}
}
return flag;
}
/**
* 判断是否为普通 Map
*
* @param typeName
* @return
*/
public static boolean isMapCollection(String typeName) {
boolean flag = false;
//判断是否是 java.util包下，名称中是否包含List、Set关键字
if (typeName.contains("java.util")) {
if (typeName.contains("Map")) {
flag = true;
}
}
return flag;
}
/**
* 普通Java类型转换为Go的普通类型
*
* @param javaType
* @return
*/
public static String JavaTypeToGoType(String javaType) {
//int类型转换
if ("int".equalsIgnoreCase(javaType) || "Integer".equalsIgnoreCase(javaType)) {
return "int32";
}
if ("byte".equalsIgnoreCase(javaType) || "Byte".equalsIgnoreCase(javaType)) {
return "int8";
}
if ("short".equalsIgnoreCase(javaType) || "Short".equalsIgnoreCase(javaType)) {
return "int16";
}
if ("long".equalsIgnoreCase(javaType) || "Long".equalsIgnoreCase(javaType)) {
return "int64";
}
if ("char".equalsIgnoreCase(javaType) || "Character".equalsIgnoreCase(javaType)) {
return "uint16";
}
if ("float".equalsIgnoreCase(javaType) || "Float".equalsIgnoreCase(javaType)) {
return "float32";
}
if ("double".equalsIgnoreCase(javaType) || "Double".equalsIgnoreCase(javaType)) {
return "float64";
}
if ("boolean".equalsIgnoreCase(javaType) || "Boolean".equalsIgnoreCase(javaType)) {
return "bool";
}
if ("String".equalsIgnoreCase(javaType)) {
return "string";
}
if ("Date".equals(javaType)){
//日期返回时间格式
return "time.Time";
}
if ("BigDecimal".equalsIgnoreCase(javaType)) {
return "string";
}
//其他情况,未知
return "unknown";
}
}
