SpringBoot中的Json字符串处理
1.0 统一响应结果集
SpringBoot 项目主要作用于前后端分离项目，为了方便前后端进行数据交互，我们需要统一后端的返回数据格式，封装出一个统一框架响应状态码和统一响应类
/**
* Constants enumerating the HTTP status codes.
* All status codes defined in RFC1945 (HTTP/1.0), RFC2616 (HTTP/1.1), and
* RFC2518 (WebDAV) are listed.
*
* @since 4.0
*/
public interface HttpStatus {
// --- 1xx Informational ---
/**
* {@code 100 Continue} (HTTP/1.1 - RFC 2616)
*/
int SC_CONTINUE = 100;
/**
* {@code 101 Switching Protocols} (HTTP/1.1 - RFC 2616)
*/
int SC_SWITCHING_PROTOCOLS = 101;
/**
* {@code 102 Processing} (WebDAV - RFC 2518)
*/
int SC_PROCESSING = 102;
// --- 2xx Success ---
/**
* {@code 200 OK} (HTTP/1.0 - RFC 1945)
*/
int SC_OK = 200;
/**
* {@code 201 Created} (HTTP/1.0 - RFC 1945)
*/
int SC_CREATED = 201;
/**
* {@code 202 Accepted} (HTTP/1.0 - RFC 1945)
*/
int SC_ACCEPTED = 202;
/**
* {@code 203 Non Authoritative Information} (HTTP/1.1 - RFC 2616)
*/
int SC_NON_AUTHORITATIVE_INFORMATION = 203;
/**
* {@code 204 No Content} (HTTP/1.0 - RFC 1945)
*/
int SC_NO_CONTENT = 204;
/**
* {@code 205 Reset Content} (HTTP/1.1 - RFC 2616)
*/
int SC_RESET_CONTENT = 205;
/**
* {@code 206 Partial Content} (HTTP/1.1 - RFC 2616)
*/
int SC_PARTIAL_CONTENT = 206;
/**
* {@code 207 Multi-Status} (WebDAV - RFC 2518)
* or
* {@code 207 Partial Update OK} (HTTP/1.1 - draft-ietf-http-v11-spec-rev-01?)
*/
int SC_MULTI_STATUS = 207;
// --- 3xx Redirection ---
/**
* {@code 300 Mutliple Choices} (HTTP/1.1 - RFC 2616)
*/
int SC_MULTIPLE_CHOICES = 300;
/**
* {@code 301 Moved Permanently} (HTTP/1.0 - RFC 1945)
*/
int SC_MOVED_PERMANENTLY = 301;
/**
* {@code 302 Moved Temporarily} (Sometimes {@code Found}) (HTTP/1.0 - RFC 1945)
*/
int SC_MOVED_TEMPORARILY = 302;
/**
* {@code 303 See Other} (HTTP/1.1 - RFC 2616)
*/
int SC_SEE_OTHER = 303;
/**
* {@code 304 Not Modified} (HTTP/1.0 - RFC 1945)
*/
int SC_NOT_MODIFIED = 304;
/**
* {@code 305 Use Proxy} (HTTP/1.1 - RFC 2616)
*/
int SC_USE_PROXY = 305;
/**
* {@code 307 Temporary Redirect} (HTTP/1.1 - RFC 2616)
*/
int SC_TEMPORARY_REDIRECT = 307;
// --- 4xx Client Error ---
/**
* {@code 400 Bad Request} (HTTP/1.1 - RFC 2616)
*/
int SC_BAD_REQUEST = 400;
/**
* {@code 401 Unauthorized} (HTTP/1.0 - RFC 1945)
*/
int SC_UNAUTHORIZED = 401;
/**
* {@code 402 Payment Required} (HTTP/1.1 - RFC 2616)
*/
int SC_PAYMENT_REQUIRED = 402;
/**
* {@code 403 Forbidden} (HTTP/1.0 - RFC 1945)
*/
int SC_FORBIDDEN = 403;
/**
* {@code 404 Not Found} (HTTP/1.0 - RFC 1945)
*/
int SC_NOT_FOUND = 404;
/**
* {@code 405 Method Not Allowed} (HTTP/1.1 - RFC 2616)
*/
int SC_METHOD_NOT_ALLOWED = 405;
/**
* {@code 406 Not Acceptable} (HTTP/1.1 - RFC 2616)
*/
int SC_NOT_ACCEPTABLE = 406;
/**
* {@code 407 Proxy Authentication Required} (HTTP/1.1 - RFC 2616)
*/
int SC_PROXY_AUTHENTICATION_REQUIRED = 407;
/**
* {@code 408 Request Timeout} (HTTP/1.1 - RFC 2616)
*/
int SC_REQUEST_TIMEOUT = 408;
/**
* {@code 409 Conflict} (HTTP/1.1 - RFC 2616)
*/
int SC_CONFLICT = 409;
/**
* {@code 410 Gone} (HTTP/1.1 - RFC 2616)
*/
int SC_GONE = 410;
/**
* {@code 411 Length Required} (HTTP/1.1 - RFC 2616)
*/
int SC_LENGTH_REQUIRED = 411;
/**
* {@code 412 Precondition Failed} (HTTP/1.1 - RFC 2616)
*/
int SC_PRECONDITION_FAILED = 412;
/**
* {@code 413 Request Entity Too Large} (HTTP/1.1 - RFC 2616)
*/
int SC_REQUEST_TOO_LONG = 413;
/**
* {@code 414 Request-URI Too Long} (HTTP/1.1 - RFC 2616)
*/
int SC_REQUEST_URI_TOO_LONG = 414;
/**
* {@code 415 Unsupported Media Type} (HTTP/1.1 - RFC 2616)
*/
int SC_UNSUPPORTED_MEDIA_TYPE = 415;
/**
* {@code 416 Requested Range Not Satisfiable} (HTTP/1.1 - RFC 2616)
*/
int SC_REQUESTED_RANGE_NOT_SATISFIABLE = 416;
/**
* {@code 417 Expectation Failed} (HTTP/1.1 - RFC 2616)
*/
int SC_EXPECTATION_FAILED = 417;
/**
* Static constant for a 418 error.
* {@code 418 Unprocessable Entity} (WebDAV drafts?)
* or {@code 418 Reauthentication Required} (HTTP/1.1 drafts?)
*/
// not used
// int SC_UNPROCESSABLE_ENTITY = 418;
/**
* Static constant for a 419 error.
* {@code 419 Insufficient Space on Resource}
* (WebDAV - draft-ietf-webdav-protocol-05?)
* or {@code 419 Proxy Reauthentication Required}
* (HTTP/1.1 drafts?)
*/
int SC_INSUFFICIENT_SPACE_ON_RESOURCE = 419;
/**
* Static constant for a 420 error.
* {@code 420 Method Failure}
* (WebDAV - draft-ietf-webdav-protocol-05?)
*/
int SC_METHOD_FAILURE = 420;
/**
* {@code 422 Unprocessable Entity} (WebDAV - RFC 2518)
*/
int SC_UNPROCESSABLE_ENTITY = 422;
/**
* {@code 423 Locked} (WebDAV - RFC 2518)
*/
int SC_LOCKED = 423;
/**
* {@code 424 Failed Dependency} (WebDAV - RFC 2518)
*/
int SC_FAILED_DEPENDENCY = 424;
// --- 5xx Server Error ---
/**
* {@code 500 Server Error} (HTTP/1.0 - RFC 1945)
*/
int SC_INTERNAL_SERVER_ERROR = 500;
/**
* {@code 501 Not Implemented} (HTTP/1.0 - RFC 1945)
*/
int SC_NOT_IMPLEMENTED = 501;
/**
* {@code 502 Bad Gateway} (HTTP/1.0 - RFC 1945)
*/
int SC_BAD_GATEWAY = 502;
/**
* {@code 503 Service Unavailable} (HTTP/1.0 - RFC 1945)
*/
int SC_SERVICE_UNAVAILABLE = 503;
/**
* {@code 504 Gateway Timeout} (HTTP/1.1 - RFC 2616)
*/
int SC_GATEWAY_TIMEOUT = 504;
/**
* {@code 505 HTTP Version Not Supported} (HTTP/1.1 - RFC 2616)
*/
int SC_HTTP_VERSION_NOT_SUPPORTED = 505;
/**
* {@code 507 Insufficient Storage} (WebDAV - RFC 2518)
*/
int SC_INSUFFICIENT_STORAGE = 507;
/**
* --------------------------------------------------
* 系统自己定义响应码
*/
// int SC_VALID_EXCEPTION = 1000;
}
import lombok.Data;
import java.util.List;
/**
* 统一响应类
*/
@Data
public class HttpResult {
private int code = 200;
private String msg;
private Object data;
public static HttpResult error() {
return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, "未知异常，请联系管理员");
}
public static HttpResult error(String msg) {
return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, msg);
}
public static HttpResult error(int code, String msg) {
HttpResult r = new HttpResult();
r.setCode(code);
r.setMsg(msg);
return r;
}
public static HttpResult error(List<String> errorList){
HttpResult r = new HttpResult();
r.setData(errorList);
r.setCode(1000);
return r;
}
public static HttpResult ok(String msg) {
HttpResult r = new HttpResult();
r.setMsg(msg);
return r;
}
public static HttpResult ok(Object data) {
HttpResult r = new HttpResult();
r.setData(data);
return r;
}
public static HttpResult ok() {
return new HttpResult();
}
}
2.0 处理日期时间格式
@JsonFormat主要是后台到前台的时间格式的转换，序列化
@DateTimeFormat主要是前后到后台的时间格式的转换，反序列化
2.1 注解式
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
2.2 全局配置式（实体类必须实现可序列化）
spring:
mvc:
date-format: yyyy-MM-dd HH:mm:ss
jackson:
date-format: yyyy-MM-dd HH:mm:ss