解析一下.json文檔
[
{
"name":"張三",
"gender":"男",
"age":"18"
},
{
"name":"李四",
"gender":"男",
"age":"28"
},
{
"name":"王六",
"gender":"女",
"age":"38"
}
]
- 聲明一個(gè)student 類.建立.h 和.m 文件
//student.h
#import <Foundation/Foundation.h>
@interface Student : NSObject
@property (nonatomic, retain) NSString *name,*age,*gender;
- (instancetype)initWithDictionary:(NSDictionary *)otherDictionary;
@end
//student.m
#import "Student.h"
@implementation Student
- (instancetype)initWithDictionary:(NSDictionary *)otherDictionary{
if (self = [super init]) {
[self setValuesForKeysWithDictionary:otherDictionary];//使用 kvc 對屬性賦值.
}
return self;
}
- (NSString *)description
{
return [NSString stringWithFormat:@"name:%@,gender:%@,age:%@", self.name,self.gender,self.age];
}
@end
//viewController.h
#import "ViewController.h"
#import "Student.h"
@interface ViewController ()
@end
使用系統(tǒng)提供的類來進(jìn)行 json 解析
//使用系統(tǒng)提供的類進(jìn)行 json 數(shù)據(jù)解析
- (IBAction)parserJSON:(id)sender {
//json文件的路徑,
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Student" ofType:@"json"];
//提取內(nèi)容
NSData *data = [[NSData alloc] initWithContentsOfFile:filePath];
NSError *error = nil;
NSMutableArray *array = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&error];
//判斷是否出現(xiàn)問題
if (error == nil) {
NSLog(@"%@",array);
}else{
NSLog(@"%@",error);
}
NSMutableArray *studentArray = [[NSMutableArray alloc] initWithCapacity:1];
for (NSDictionary *dic in array) {
Student *student = [[Student alloc] initWithDictionary:dic];
[studentArray addObject:student];
}
for (Student *stu in studentArray) {
NSLog(@"%@",stu);
}
}
//解析的結(jié)果為
2016-07-03 19:15:19.521 jsonParser[2147:180052] (
{
age = 18;
gender = "\U7537";
name = "\U5f20\U4e09";
},
{
age = 28;
gender = "\U7537";
name = "\U674e\U56db";
},
{
age = 38;
gender = "\U5973";
name = "\U738b\U516d";
}
)
2016-07-03 19:15:19.522 jsonParser[2147:180052] name:張三,gender:男,age:18
2016-07-03 19:15:19.522 jsonParser[2147:180052] name:李四,gender:男,age:28
2016-07-03 19:15:19.522 jsonParser[2147:180052] name:王六,gender:女,age:38
使用第三方 JSONKit 來進(jìn)行解析,首先要下載有關(guān)的 JSONKit 的. h 和. m 文件
然后
//使用第三方 jsonkit 進(jìn)行 json數(shù)據(jù)解析.這樣做的好處就是可以清楚的觀察到解析的數(shù)據(jù).
- (IBAction)patserJSONKIT:(id)sender {
//獲取json文件的路徑
NSString *filepath = [[NSBundle mainBundle] pathForResource:@"Student" ofType:@"json"];
//獲取 json 文件的內(nèi)容
NSString *contentString = [[NSString alloc] initWithContentsOfFile:filepath encoding:NSUTF8StringEncoding error:nil];
//使用 jsonkit進(jìn)行解析
NSArray *array = [contentString objectFromJSONString];
NSLog(@"%@",array);
//數(shù)據(jù)封裝
NSMutableArray *studentArray = [[NSMutableArray alloc] initWithCapacity:3];
for (NSDictionary *dic in array) {
Student *student = [[Student alloc] initWithDictionary:dic];
[studentArray addObject:student];
}
for (Student *stu in studentArray) {
NSLog(@"%@",stu);
}
}
//解析的結(jié)果為
2016-07-03 19:17:45.691 jsonParser[2147:180052] (
{
age = 18;
gender = "\U7537";
name = "\U5f20\U4e09";
},
{
age = 28;
gender = "\U7537";
name = "\U674e\U56db";
},
{
age = 38;
gender = "\U5973";
name = "\U738b\U516d";
}
)
2016-07-03 19:17:45.691 jsonParser[2147:180052] name:張三,gender:男,age:18
2016-07-03 19:17:45.691 jsonParser[2147:180052] name:李四,gender:男,age:28
2016-07-03 19:17:45.691 jsonParser[2147:180052] name:王六,gender:女,age:38
