java为移动端写接口开发实例

//java端package cotroller;import java.util.HashMap;import java.util.Map;import java.util.List;import javax.servlet.http.HttpServletRequest;import jdk.nashorn.api.scripting.JSObject;import model.Student;import model.Teacher;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.ResponseBody;import dao.Get;import dao.StudentDAO;//登陆servlet@Controllerpublic class LoginCotroller {    /**   * 1. value="/doLogin/{username}/{password}" 拦截 xxx/doLogin/xx/xx   * 2. @ResponseBody 使用此注解将返回数据类型封装json   * 3. @PathVariable("username") 截取请求1.value中{username}的值   * 4. Map<String, Object> 服务端将值放入map中再封装为json,客户端方便通过key取出value   */    StudentDAO studentDAO = new StudentDAO();//调用登陆判断方法    @RequestMapping(value="/doLogin/{username}/{password}",method=RequestMethod.GET)  @ResponseBody  public Map<String, Object> getTeacher(@PathVariable("username") Integer username, @PathVariable("password") String password){      System.out.println("拦截了客户端json请求");    Map<String, Object> map = new HashMap<String, Object>();        if(studentDAO.loginByStudent(username, password)){      System.out.println("密码正确");      map.put("result", "1");      return map; //封装为json返回给客户端    }          System.out.println("密码错误");    map.put("result", "0");    return map; //封装为json返回给客户端  }}

//ios端#import <Foundation/Foundation.h>#import <stdio.h>int main(int argc, const char * argv[]) {  @autoreleasepool {      char oldUsername[128];    char oldPassword[128];        NSLog(@"请输入用户名 ：");    scanf("%s", oldUsername);    NSString *username = [NSString stringWithUTF8String:oldUsername]; //转换为NSString *    NSLog(@"请输入密码 ：");    scanf("%s", oldPassword);    NSString *password = [NSString stringWithUTF8String:oldPassword]; //转换为NSString *        //访问springMVC后台并解析返回的json数据    //定义一个异常    NSError *error;        //定义请求action 使用stringWithFormat拼接字符串    NSString *url = [NSString stringWithFormat:@"http://154212l6t7.imwork.net:27063/partyOS_APP/doLogin/%@/%@", username, password];        //加载一个NSURL对象    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];        //发送请求 将请求的url数据放到NSData对象中    NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];        //NSJSONSerialization从response请求中解析出数据放到字典中    NSDictionary *jsonResult = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error];        NSString *resultValue = [jsonResult objectForKey:@"result"];        NSLog(@"你的url是%@", url);    NSLog(@"服务端返回值%@", resultValue);        // oc字符串比较方法 resultValue isEqualToString:@"1"] 和java 的equlse类似    if([resultValue isEqualToString:@"1"]){      NSLog(@"登录成功!");    }else{      NSLog(@"登录失败,用户名或密码错误!");    }          }  return 0;}