url: '/loginReq'(post)
request: {
  username: string,
  password: string
}
response: {
  success: bool,
  id: number,
  authority: {  //  若success为false，返回null
    write: bool,
    query: bool,
    modify: bool,
    extract: bool
  },
  err: string  //  登录失败时返回的提示信息（密码错误、用户名不存在...)
}

url: '/register'(post)
request: {
  username: string,
  password: string,
  authority: number
}
response: {
  success: bool,
  err: err
}

url: '/query'(post)
request: {
  id: number,  //  若id为null则不用考虑id
  condition: {
    disease: string,    //  如果未指定则设为null
    country: string,    //  如果未指定则设为null
    year: number,       //  如果未指定则设为null
    doubleClick: bool   //  如果未指定则设为null
    //  不会出现四个都为null的情况
  },
  authority: number     //  根据权限确定用户可检索的范围
}
response: {
  result: [{  //  如果查不到，返回null
    ReportID,
    Reporter,
    Disease,
    Country,
    DocumentCategory,
    Journal,
    Title,
    Authors,
    YearOfPub,
    Volume,
    Issue,
    PageFrom,
    PageTo,
    AuthorContactNeeded,
    OpenAccess,
    Checked,
    Note1                 
  }, {
    ...
  }, {
    ...
  }]
}

url: '/querynext'(post)
request: {
  type: enum('Survey Description', 'Location Information', 'Disease Data', 'Intervention Data')
  id: number  //  type上一级的id
}
response: {   //  格式:没有空格或下划线，首字母大写的CamelCase
  result: [{  //  如果查不到，返回null
    ...
  }]
}

url: '/getidtree'(post)
request: {
  id: number  //  ReportID
}
response: {
  data: "获取的ID树",  //  若发生错误设置成null
  err: "错误信息"      //  若未发生错误设置为null
}

url: '/getidcontent'(post)
request: {
  type: enum('Basic Sources', 'Survey Description', 'Location Information', 'Disease Data', 'Intervention Data'),
  id: number  //  ReportID
}
response: {
  data: {  //  如果查不到，返回null
    ...
  },
  err: err
}

url: '/getid'(post)
request: {
  type: enum('Basic Source', 'Survey Description', 'Location Information', 'Disease Data', 'Intervention Data')
}
response {
  id: number  //  服务器提供的对应类型的ID
}

url: '/add'(post)
request: {
  type: enum('Survey Description', 'Location Information', 'Disease Data', 'Intervention Data'),
  data: {
    ...
  }
}
response: {
  success: bool,
  err: string  // 错误信息：重复的主键etc; 若成功设为null
}

url: '/delete'(post)
request: {  //  递归地删除掉下层所有的表
  type: enum('Survey Description', 'Location Information', 'Disease Data', 'Intervention Data')
  id: number  //  type表的id
}
response: {    //  格式:没有空格或下划线，首字母大写的CamelCase
  success: bool,
  err: err  // 错误信息，若成功设为null
}

url: '/edit'(post)
request: {  //  递归地删除掉下层所有的表
  type: enum('Survey Description', 'Location Information', 'Disease Data', 'Intervention Data'),
  id: number,  //  type表的id
  data: {      //  更新后的数据
    ...
  }
}
response: {
  success: bool,
  err: err  // 错误信息，若成功设为null
}

url: '/exportexcel'(get)
request: {
  ids: [ id1, id2, ... ]  //  report ids
}
response: {
  success: bool,
  err: err
}

url: '/exitimport'
request: {
  operation: number  //  0: 终止并退出; 1: 保存并退出
}
response {
  success: bool,
  err: err
}

url: '/importexcel'(post)
request: {
  (file) xlsx/xls
  id: number
}
response {
  success: bool,
  err: err
}