NSString,NSArray和NSDictionary to JSON标准格式字符串 结构优化

//

// NSString+HXAddtions.h

// HXWeb

//

// Created by hufeng on 12-2-13.

// Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

//

#import <Foundation/Foundation.h>

@interface NSString (HXAddtions)

+(NSString *) jsonStringWithDictionary:(NSDictionary *)dictionary;

+(NSString *) jsonStringWithArray:(NSArray *)array;

+(NSString *) jsonStringWithString:(NSString *) string;

+(NSString *) jsonStringWithObject:(id) object;

+(void) jsonTest;

@end

//

// NSString+HXAddtions.m

// HXWeb

//

// Created by hufeng on 12-2-13.

// Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

//

#import "NSString+HXAddtions.h"

@implementation NSString (HXAddtions)

+(void)jsonTest{

//test

NSDictionary *dictionary1 = [NSDictionary dictionaryWithObjectsAndKeys:

@"阿三\"\n11",@"name",

@"18",@"age",

nil];

NSDictionary *dictionary2 = [NSDictionary dictionaryWithObjectsAndKeys:

@"阿四",@"name",

@"20",@"age",

nil];

NSArray *array = [NSArray arrayWithObjects:dictionary1,dictionary2, nil];

NSDictionary *dictionary3 = [NSDictionary dictionaryWithObjectsAndKeys:

@"李\na",@"name",

@"29",@"age",

nil];

NSDictionary *dictionary = [NSDictionary dictionaryWithObjectsAndKeys:

@"string",@"string",

array,@"array",

dictionary3,@"dictionary",

nil];

NSLog(@"dictionary:%@",dictionary);

NSString *jsonString = [NSString jsonStringWithObject:dictionary];

NSLog(@"dictionary jsonString:%@",jsonString);

NSLog(@"%@",[NSDictionary dictionaryWithData:[jsonString dataUsingEncoding:NSUTF8StringEncoding]]);

}

+(NSString *) jsonStringWithString:(NSString *) string{

return [NSString stringWithFormat:@"\"%@\"",

[[string stringByReplacingOccurrencesOfString:@"\n" withString:@"\\n"] stringByReplacingOccurrencesOfString:@"\"" withString:@"\\\""]

];

}

+(NSString *) jsonStringWithArray:(NSArray *)array{

NSMutableString *reString = [NSMutableString string];

[reString appendString:@"["];

NSMutableArray *values = [NSMutableArray array];

for (id valueObj in array) {

NSString *value = [NSString jsonStringWithObject:valueObj];

if (value) {

[values addObject:[NSString stringWithFormat:@"%@",value]];

}

}

[reString appendFormat:@"%@",[values componentsJoinedByString:@","]];

[reString appendString:@"]"];

return reString;

}

+(NSString *) jsonStringWithDictionary:(NSDictionary *)dictionary{

NSArray *keys = [dictionary allKeys];

NSMutableString *reString = [NSMutableString string];

[reString appendString:@"{"];

NSMutableArray *keyValues = [NSMutableArray array];

for (int i=0; i<[keys count]; i++) {

NSString *name = [keys objectAtIndex:i];

id valueObj = [dictionary objectForKey:name];

NSString *value = [NSString jsonStringWithObject:valueObj];

if (value) {

[keyValues addObject:[NSString stringWithFormat:@"\"%@\":%@",name,value]];

}

}

[reString appendFormat:@"%@",[keyValues componentsJoinedByString:@","]];

[reString appendString:@"}"];

return reString;

}

+(NSString *) jsonStringWithObject:(id) object{

NSString *value = nil;

if (!object) {

return value;

}

if ([object isKindOfClass:[NSString class]]) {

value = [NSString jsonStringWithString:object];

}else if([object isKindOfClass:[NSDictionary class]]){

value = [NSString jsonStringWithDictionary:object];

}else if([object isKindOfClass:[NSArray class]]){

value = [NSString jsonStringWithArray:object];

}

return value;

}

@end