ios XML,JSON,数组解析并转换成NSMutableArray（List<class>）

一、简介

JSON解析:

通过正则将JSON([{...},{...}...])分解成多个包含实体实例内容的一小节({...})，在一小节中通过Runtime(运行时)(<objc/runtime.h>)将实体所有属性值找到并赋值（正则查找实现）到实例({...} --> 实体的一个实例)，遍历所有小节({...})就将XML转换成NSMutableArray（类似：List<class>）。

XML 解析:

通过GDataXml（也可以通过正则）将XML分解成多个包含实体实例内容的一小节XML，在一小节中通过Runtime(运行时)(<objc/runtime.h>)将实体所有属性值找到并赋值（正则查找实现）到实例，遍历所有小节就将XML转换成NSMutableArray（类似：List<class>）。

数组解析:
将XML拼接，通过GDataXml将XML转换成NSMutableArray（类似：List<string>）（整个过程也可以通过正则实现）。

已将3个解析方法写到一个公用类（GlobalApplication）中

需注意的是实现方法中要添加2个头文件

#import <objc/runtime.h>
#import "GDataXMLNode.h"

使用说明：

// User 为一个 实体类
// xml --> NSMutableArray (List<class>)
NSMutableArray *retVal = [GlobalApplication jsonToArray:xml class:User.class];
// xml --> NSMutableArray (List<class>)
NSMutableArray *retVal = [GlobalApplication xmlToArray:xml class:User.class rowRootName:@"row"];
// xml --> NSMutableArray (List<String>)
NSMutableArray *retVal = [GlobalApplication xmlToArray:xml];

二、代码

1、GlobalApplication.h

//
//  GlobalApplication.h
//  WebServcieBySoap
//
//  Created by fengs on 14-11-19.
//  Copyright (c) 2014年 fengs. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface GlobalApplication : NSObject

#pragma mark -
#pragma mark - 将xml(数组)转换成NSMutableArray (List<String>)
/**
* 将xml(数组)转换成NSMutableArray
* @param xml
<string>fs</string>
<string>fs</string>
...
* @return NSMutableArray (List<String>)
*/
+(NSMutableArray*)xmlToArray:(NSString*)xml;

#pragma mark -
#pragma mark - 将标准的xml(实体)转换成NSMutableArray (List<class>)
/**
* 把标准的xml(实体)转换成NSMutableArray
* @param xml:
<data xmlns="">
<row><UserID>ff0f0704</UserID><UserName>fs</UserName></row>
<row><UserID>ff0f0704</UserID><UserName>fs</UserName></row>
......
</data>
* @param class:
User
* @param rowRootName:
row
* @return NSMutableArray (List<class>)
*/
+(NSMutableArray*)xmlToArray:(NSString*)xml class:(Class)class rowRootName:rowRootName;

#pragma mark -
#pragma mark - 将标准的Json(实体)转换成NSMutableArray (List<class>)
/**
* 把标准的xml(实体)转换成NSMutableArray
* @param xml:
[{"UserID":"ff0f0704","UserName":"fs"},
{"UserID":"ff0f0704","UserName":"fs"},...]
* @param class:
User
* @return NSMutableArray (List<class>)
*/
+(NSMutableArray*)jsonToArray:(NSString*)json class:(Class)class;
@end

2、GlobalApplication.m

//
//  GlobalApplication.m
//  WebServcieBySoap
//
//  Created by fengs on 14-11-19.
//  Copyright (c) 2014年 fengs. All rights reserved.
//

#import "GlobalApplication.h"
#import <objc/runtime.h>
#import "GDataXMLNode.h"

@implementation GlobalApplication

#pragma mark -
#pragma mark - 将xml(数组)转换成NSMutableArray (List<String>)
/**
* 将xml(数组)转换成NSMutableArray
* @param xml
<string>fs</string>
<string>fs</string>
...
* @return NSMutableArray (List<String>)
*/
+(NSMutableArray*)xmlToArray:(NSString*)xml{

NSMutableArray *retVal = [[[NSMutableArray alloc] init] autorelease];
xml = [NSString stringWithFormat:@"<data>%@</data>",xml];
GDataXMLDocument *root = [[[GDataXMLDocument alloc] initWithXMLString:xml options:0 error:nil] autorelease];
GDataXMLElement *rootEle = [root rootElement];
for (int i=0; i <[rootEle childCount]; i++) {
GDataXMLNode *item = [rootEle childAtIndex:i];
[retVal addObject:item.stringValue];
}
return retVal;
}

#pragma mark -
#pragma mark - 将标准的xml(实体)转换成NSMutableArray (List<class>)
/**
* 将标准的xml(实体)转换成NSMutableArray
* @param xml:
<data xmlns="">
<row><UserID>ff0f0704</UserID><UserName>fs</UserName></row>
<row><UserID>ff0f0704</UserID><UserName>fs</UserName></row>
......
</data>
* @param class:
User
* @param rowRootName:
row
* @return NSMutableArray (List<class>)
*/
+(NSMutableArray*)xmlToArray:(NSString*)xml class:(Class)class rowRootName:rowRootName{

NSMutableArray *retVal = [[[NSMutableArray alloc] init] autorelease];
GDataXMLDocument *root = [[[GDataXMLDocument alloc] initWithXMLString:xml options:0 error:nil] autorelease];
GDataXMLElement *rootEle = [root rootElement];
NSArray *rows = [rootEle elementsForName:rowRootName];
for (GDataXMLElement *row in rows) {
id object = [[class alloc] init];
object = [self initWithXMLString:row.XMLString object:object];
[retVal addObject:object];
[object release];
}
return retVal;
}

/**
* 将传递过来的实体赋值
* @param xml(忽略实体属性大小写差异):
<row><UserID>ff0f0704</UserID><UserName>fs</UserName></row>
* @param class:
User @property userName,userID;
* @return class
*/
+(id)initWithXMLString:(NSString*)xml object:(id)object{

unsigned int outCount, i;
objc_property_t *properties = class_copyPropertyList([object class], &outCount);
for (i = 0; i<outCount; i++)
{
objc_property_t property = properties[i];
const char* char_f = property_getName(property);
NSString *propertyName = [NSString stringWithUTF8String:char_f];
NSString *value = [self setXMLProperty:xml propertyName:propertyName];
[object setValue:value forKey:propertyName];
}
free(properties);

return object;
}

/**
* 通过正则将传递过来的实体赋值
* @param content(忽略实体属性大小写差异):
<row><UserID>ff0f0704</UserID><UserName>fs</UserName></row>
* @param propertyName:
userID
* @return NSString
ff0f0704
*/
+(NSString*)setXMLProperty:(NSString*)value propertyName:(NSString*)propertyName {

NSString *retVal = @"";
NSString *patternString = [NSString stringWithFormat:@"(?<=<%@>)(.*)(?=</%@>)",propertyName,propertyName];
// CaseInsensitive:不区分大小写比较
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:patternString options:NSRegularExpressionCaseInsensitive error:nil];
if (regex) {
NSTextCheckingResult *firstMatch = [regex firstMatchInString:value options:NSCaseInsensitiveSearch range:NSMakeRange(0, [value length])];
if (firstMatch) {
retVal = [value substringWithRange:firstMatch.range];
}
}
return retVal;
}

#pragma mark -
#pragma mark - 将标准的Json(实体)转换成NSMutableArray (List<class>)
/**
* 将标准的Json(实体)转换成NSMutableArray
* @param xml:
[{"UserID":"ff0f0704","UserName":"fs"},
{"UserID":"ff0f0704","UserName":"fs"},...]
* @param class:
User
* @return NSMutableArray (List<class>)
*/
+(NSMutableArray*)jsonToArray:(NSString*)json class:(Class)class {

NSMutableArray *retVal = [[[NSMutableArray alloc] init] autorelease];
NSString *patternString = @"\\{.*?\\}";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:patternString options:0 error:nil];
if (regex) {
NSArray *match = [regex matchesInString:json options:0 range:NSMakeRange(0, [json length])];
if (match) {
for (NSTextCheckingResult *result in match) {
NSString *jsonRow = [json substringWithRange:result.range];
id object = [[class alloc] init];
object = [self initWithJsonString:jsonRow object:object];
[retVal addObject:object];
[object release];
}
}
}
return retVal;
}

/**
* 将传递过来的实体赋值
* @param xml(忽略实体大小写差异):
{"UserID":"ff0f0704","UserName":"fs"}
* @param class:
User @property userName,userID;
* @return class
*/
+(id)initWithJsonString:(NSString*)json object:(id)object{

unsigned int outCount, i;
objc_property_t *properties = class_copyPropertyList([object class], &outCount);
for (i = 0; i<outCount; i++)
{
objc_property_t property = properties[i];
const char* char_f = property_getName(property);
NSString *propertyName = [NSString stringWithUTF8String:char_f];
NSString *value = [self setJsonProperty:json propertyName:propertyName];
[object setValue:value forKey:propertyName];
}
free(properties);

return object;
}

/**
* 通过正则将传递过来的实体赋值
* @param content(忽略实体大小写差异):
{"UserID":"ff0f0704","UserName":"fs"}
* @param propertyName:
userID
* @return NSString
ff0f0704
*/
+(NSString*)setJsonProperty:(NSString*)value propertyName:(NSString*)propertyName {

NSString *retVal = @"";
NSString *patternString = [NSString stringWithFormat:@"(?<=\"%@\":\")[^\",]*",propertyName];
// CaseInsensitive:不区分大小写比较
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:patternString options:NSRegularExpressionCaseInsensitive error:nil];
if (regex) {
NSTextCheckingResult *firstMatch = [regex firstMatchInString:value options:NSCaseInsensitiveSearch range:NSMakeRange(0, [value length])];
if (firstMatch) {
retVal = [value substringWithRange:firstMatch.range];
}
}
return retVal;
}
@end