SpringMVC 添加字段校验（注解的方式）

 1 import java.lang.annotation.ElementType;

 2 import java.lang.annotation.Retention;

 3 import java.lang.annotation.RetentionPolicy;

 4 import java.lang.annotation.Target;

 5 

 6 @Retention(RetentionPolicy.RUNTIME)  

 7 @Target(ElementType.METHOD)  

 8 public @interface ParamsValidate {

 9     ParamValidate[] value();

10 }

 

 1 import java.lang.annotation.ElementType;

 2 import java.lang.annotation.Retention;

 3 import java.lang.annotation.RetentionPolicy;

 4 import java.lang.annotation.Target;

 5 

 6 @Retention(RetentionPolicy.RUNTIME)  

 7 @Target(ElementType.METHOD)  

 8 public @interface ParamValidate {

17     String name();

27     String regex() default "";

36     boolean notNull() default false;

45     String message() default "";

54     int minLen() default -1;

63     int maxLen() default -1;

72     int maxVal() default -1 ;  

81     int minVal() default -1 ; 

90     String dateFormat() default "";

91 }

 

import java.lang.annotation.Annotation;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.HashMap;

import java.util.Map;



import javax.servlet.http.HttpServletRequest;



import cn.edsport.base.domain.model.pub.ServiceException;

import cn.edsport.base.utils.StringUtil;



public class ParamValidateMethods {

    

    /**

     * @author JinXue 2015年7月3日 下午9:44:52

     * @Method: getAnnotationByMethod

     * @Description: TODO 根据目标方法和注解类型 得到该目标方法的指定注解

     * @param method

     * @param annoClass

     * @return

     * @throws

     */

    public static Annotation getAnnotationByMethod(Method method, Class annoClass) {

        Annotation all[] = method.getAnnotations();

        for (Annotation annotation : all) {

            if (annotation.annotationType() == annoClass) {

                return annotation;

            }

        }

        return null;

    }

    

    /**

     * @author JinXue 2015年7月3日 下午9:45:04

     * @Method: getMethodByClassAndName

     * @Description: TODO 根据类和方法名得到方法

     * @param c

     * @param methodName

     * @return

     * @throws

     */

    public static Method getMethodByClassAndName(Class c, String methodName) {

        Method[] methods = c.getDeclaredMethods();

        for (Method method : methods) {

            if (method.getName().equals(methodName)) {

                return method;

            }

        }

        return null;

    }

    

    /**

     * @author JinXue 2015年7月3日 下午9:45:50

     * @Method: getGetterNameByFiledName

     * @Description: TODO 得到该属性的getter方法名

     * @param fieldName

     * @return

     * @throws

     */

    public static String getGetterNameByFiledName(String fieldName) {

        return "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);

    }

    

    /**

     * @author JinXue 2015年7月3日 下午9:46:32

     * @Method: getFieldByObjectAndFileName

     * @Description: TODO 根据对象和属性名得到 属性

     * @param targetObj

     * @param fileName

     * @return

     * @throws SecurityException

     * @throws NoSuchMethodException

     * @throws IllegalArgumentException

     * @throws IllegalAccessException

     * @throws InvocationTargetException

     * @throws

     */

    public static Object getFieldByObjectAndFileName(Object targetObj, String fileName) throws SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException {

        String tmp[] = fileName.split("\\.");

        Object arg = targetObj;

        for (int i = 0; i < tmp.length; i++) {

            Method methdo = arg.getClass().getMethod(getGetterNameByFiledName(tmp[i]));

            arg = methdo.invoke(arg);

        }

        return arg;

    }

    

    /**

     * @author JinXue 2015年7月3日 下午10:25:05

     * @Method: validateFiled

     * @Description: TODO 验证字段的正确性

     * @param valiedatefiles

     * @param request

     * @return

     * @throws SecurityException

     * @throws IllegalArgumentException

     * @throws NoSuchMethodException

     * @throws IllegalAccessException

     * @throws InvocationTargetException

     * @throws ServiceException

     * @throws

     */

    public static boolean validateFiled(ParamValidate[] valiedatefiles, HttpServletRequest request) throws SecurityException, IllegalArgumentException, NoSuchMethodException, IllegalAccessException, InvocationTargetException, ServiceException {

        Map<String, Object> errorMaps = new HashMap<String, Object>();

        boolean flag = true;

        for (ParamValidate validateFiled : valiedatefiles) {

            Object arg = null;

            if (!"".equals(validateFiled.name())) {

                arg = request.getParameter(validateFiled.name());

            } else {

                flag = false;

                errorMaps.put(validateFiled.name(), "需验证的字段不能为空");

            }

            if (validateFiled.notNull()) { // 判断参数是否为空

                if (arg == null || "".equals(arg.toString())) {

                    flag = false;

                    errorMaps.put(validateFiled.name(), validateFiled.message());

                }

            } else { // 如果该参数能够为空，并且当参数为空时，就不用判断后面的了 ，直接返回true

                if (arg == null)

                    return true;

            }

            if (arg instanceof String) {

                if (!StringUtil.isEmptyOrNull(arg.toString()) && validateFiled.maxLen() > 0) { // 判断字符串最大长度

                    if (((String)arg).length() > validateFiled.maxLen()) {

                        flag = false;

                        errorMaps.put(validateFiled.name(), validateFiled.message());

                    }

                }

                if (!StringUtil.isEmptyOrNull(arg.toString()) && validateFiled.minLen() > 0) { // 判断字符串最小长度

                    if (((String)arg).length() < validateFiled.minLen()) {

                        flag = false;

                        errorMaps.put(validateFiled.name(), validateFiled.message());

                    }

                }

                if (!StringUtil.isEmptyOrNull(arg.toString()) && !"".equals(validateFiled.regex())) { // 判断正则

                    if (arg instanceof String) {

                        if (!((String)arg).matches(validateFiled.regex())) {

                            flag = false;

                            errorMaps.put(validateFiled.name(), validateFiled.message());

                        }

                    } else {

                        flag = false;

                        errorMaps.put(validateFiled.name(), validateFiled.message());

                    }

                }

                if (!StringUtil.isEmptyOrNull(arg.toString()) && !"".equals(validateFiled.dateFormat())) {

                    SimpleDateFormat sdf = new SimpleDateFormat();

                    try {

                        sdf.parse(validateFiled.dateFormat());

                    } catch (ParseException e) {

                        flag = false;

                        errorMaps.put(validateFiled.name(), validateFiled.message());

                    }

                }

            }

            if (arg != null && validateFiled.maxVal() != -1) { // 判断数值最大值

                if (Integer.parseInt(arg.toString()) > validateFiled.maxVal()) {

                    flag = false;

                    errorMaps.put(validateFiled.name(), validateFiled.message());

                }

            }

            if (arg != null && validateFiled.minVal() != -1) { // 判断数值最小值

                if (Integer.parseInt(arg.toString()) < validateFiled.minVal()) {

                    flag = false;

                    errorMaps.put(validateFiled.name(), validateFiled.message());

                }

            }

        }

        if (!flag) {

            throw new ServiceException(1, errorMaps);

        }

        return flag;

    }

    

}

@Controller

@RequestMapping(value=ControllerMappings.GET_MY_CLUB_LIST)

public class ClubInfoGetMyClubInfoController {

	

	private Logger logger=Logger.getLogger(cn.edsport.app.web.controller.club.ClubInfoClubSetController.class);

	

	@ParamsValidate(value={

			@ParamValidate(name="qryUserId",notNull=true,message="不能为空")

			})

	@ResponseBody

	@RequestMapping(params="protocolVer=1.0")

	public Message getVersion_1_0(HttpServletRequest request,HttpServletResponse response,Long qryUserId)throws Exception{

		return null;

	}

}