RuoYi-Vue 1.0

ruoyi/src/main/java/com/ruoyi/common/enums/UserStatus.java

+package com.ruoyi.common.enums;
+
+/**
+ * 用户状态
+ * 
+ * @author ruoyi
+ */
+public enum UserStatus
+{
+    OK("0", "正常"), DISABLE("1", "停用"), DELETED("2", "删除");
+
+    private final String code;
+    private final String info;
+
+    UserStatus(String code, String info)
+    {
+        this.code = code;
+        this.info = info;
+    }
+
+    public String getCode()
+    {
+        return code;
+    }
+
+    public String getInfo()
+    {
+        return info;
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/BaseException.java

+package com.ruoyi.common.exception;
+
+import com.ruoyi.common.utils.MessageUtils;
+import com.ruoyi.common.utils.StringUtils;
+
+/**
+ * 基础异常
+ * 
+ * @author ruoyi
+ */
+public class BaseException extends RuntimeException
+{
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * 所属模块
+     */
+    private String module;
+
+    /**
+     * 错误码
+     */
+    private String code;
+
+    /**
+     * 错误码对应的参数
+     */
+    private Object[] args;
+
+    /**
+     * 错误消息
+     */
+    private String defaultMessage;
+
+    public BaseException(String module, String code, Object[] args, String defaultMessage)
+    {
+        this.module = module;
+        this.code = code;
+        this.args = args;
+        this.defaultMessage = defaultMessage;
+    }
+
+    public BaseException(String module, String code, Object[] args)
+    {
+        this(module, code, args, null);
+    }
+
+    public BaseException(String module, String defaultMessage)
+    {
+        this(module, null, null, defaultMessage);
+    }
+
+    public BaseException(String code, Object[] args)
+    {
+        this(null, code, args, null);
+    }
+
+    public BaseException(String defaultMessage)
+    {
+        this(null, null, null, defaultMessage);
+    }
+
+    @Override
+    public String getMessage()
+    {
+        String message = null;
+        if (!StringUtils.isEmpty(code))
+        {
+            message = MessageUtils.message(code, args);
+        }
+        if (message == null)
+        {
+            message = defaultMessage;
+        }
+        return message;
+    }
+
+    public String getModule()
+    {
+        return module;
+    }
+
+    public String getCode()
+    {
+        return code;
+    }
+
+    public Object[] getArgs()
+    {
+        return args;
+    }
+
+    public String getDefaultMessage()
+    {
+        return defaultMessage;
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/CustomException.java

+package com.ruoyi.common.exception;
+
+/**
+ * 自定义异常
+ * 
+ * @author ruoyi
+ */
+public class CustomException extends RuntimeException
+{
+    private static final long serialVersionUID = 1L;
+
+    private Integer code;
+
+    private String message;
+
+    public CustomException(String message)
+    {
+        this.message = message;
+    }
+
+    public CustomException(String message, Integer code)
+    {
+        this.message = message;
+        this.code = code;
+    }
+
+    public CustomException(String message, Throwable e)
+    {
+        super(message, e);
+        this.message = message;
+    }
+
+    @Override
+    public String getMessage()
+    {
+        return message;
+    }
+
+    public Integer getCode()
+    {
+        return code;
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/DemoModeException.java

+package com.ruoyi.common.exception;
+
+/**
+ * 演示模式异常
+ * 
+ * @author ruoyi
+ */
+public class DemoModeException extends RuntimeException
+{
+    private static final long serialVersionUID = 1L;
+
+    public DemoModeException()
+    {
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/UtilException.java

+package com.ruoyi.common.exception;
+
+/**
+ * 工具类异常
+ * 
+ * @author ruoyi
+ */
+public class UtilException extends RuntimeException
+{
+    private static final long serialVersionUID = 8247610319171014183L;
+
+    public UtilException(Throwable e)
+    {
+        super(e.getMessage(), e);
+    }
+
+    public UtilException(String message)
+    {
+        super(message);
+    }
+
+    public UtilException(String message, Throwable throwable)
+    {
+        super(message, throwable);
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/file/FileException.java

+package com.ruoyi.common.exception.file;
+
+import com.ruoyi.common.exception.BaseException;
+
+/**
+ * 文件信息异常类
+ * 
+ * @author ruoyi
+ */
+public class FileException extends BaseException
+{
+    private static final long serialVersionUID = 1L;
+
+    public FileException(String code, Object[] args)
+    {
+        super("file", code, args, null);
+    }
+
+}

ruoyi/src/main/java/com/ruoyi/common/exception/file/FileNameLengthLimitExceededException.java

+package com.ruoyi.common.exception.file;
+
+/**
+ * 文件名称超长限制异常类
+ * 
+ * @author ruoyi
+ */
+public class FileNameLengthLimitExceededException extends FileException
+{
+    private static final long serialVersionUID = 1L;
+
+    public FileNameLengthLimitExceededException(int defaultFileNameLength)
+    {
+        super("upload.filename.exceed.length", new Object[] { defaultFileNameLength });
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/file/FileSizeLimitExceededException.java

+package com.ruoyi.common.exception.file;
+
+/**
+ * 文件名大小限制异常类
+ * 
+ * @author ruoyi
+ */
+public class FileSizeLimitExceededException extends FileException
+{
+    private static final long serialVersionUID = 1L;
+
+    public FileSizeLimitExceededException(long defaultMaxSize)
+    {
+        super("upload.exceed.maxSize", new Object[] { defaultMaxSize });
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/file/InvalidExtensionException.java

+package com.ruoyi.common.exception.file;
+
+import java.util.Arrays;
+import org.apache.commons.fileupload.FileUploadException;
+
+/**
+ * 文件上传 误异常类
+ * 
+ * @author ruoyi
+ */
+public class InvalidExtensionException extends FileUploadException
+{
+    private static final long serialVersionUID = 1L;
+
+    private String[] allowedExtension;
+    private String extension;
+    private String filename;
+
+    public InvalidExtensionException(String[] allowedExtension, String extension, String filename)
+    {
+        super("filename : [" + filename + "], extension : [" + extension + "], allowed extension : [" + Arrays.toString(allowedExtension) + "]");
+        this.allowedExtension = allowedExtension;
+        this.extension = extension;
+        this.filename = filename;
+    }
+
+    public String[] getAllowedExtension()
+    {
+        return allowedExtension;
+    }
+
+    public String getExtension()
+    {
+        return extension;
+    }
+
+    public String getFilename()
+    {
+        return filename;
+    }
+
+    public static class InvalidImageExtensionException extends InvalidExtensionException
+    {
+        private static final long serialVersionUID = 1L;
+
+        public InvalidImageExtensionException(String[] allowedExtension, String extension, String filename)
+        {
+            super(allowedExtension, extension, filename);
+        }
+    }
+
+    public static class InvalidFlashExtensionException extends InvalidExtensionException
+    {
+        private static final long serialVersionUID = 1L;
+
+        public InvalidFlashExtensionException(String[] allowedExtension, String extension, String filename)
+        {
+            super(allowedExtension, extension, filename);
+        }
+    }
+
+    public static class InvalidMediaExtensionException extends InvalidExtensionException
+    {
+        private static final long serialVersionUID = 1L;
+
+        public InvalidMediaExtensionException(String[] allowedExtension, String extension, String filename)
+        {
+            super(allowedExtension, extension, filename);
+        }
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/user/CaptchaException.java

+package com.ruoyi.common.exception.user;
+
+/**
+ * 验证码错误异常类
+ * 
+ * @author ruoyi
+ */
+public class CaptchaException extends UserException
+{
+    private static final long serialVersionUID = 1L;
+
+    public CaptchaException()
+    {
+        super("user.jcaptcha.error", null);
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/user/CaptchaExpireException.java

+package com.ruoyi.common.exception.user;
+
+/**
+ * 验证码失效异常类
+ * 
+ * @author ruoyi
+ */
+public class CaptchaExpireException extends UserException
+{
+    private static final long serialVersionUID = 1L;
+
+    public CaptchaExpireException()
+    {
+        super("user.jcaptcha.expire", null);
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/user/UserException.java

+package com.ruoyi.common.exception.user;
+
+import com.ruoyi.common.exception.BaseException;
+
+/**
+ * 用户信息异常类
+ * 
+ * @author ruoyi
+ */
+public class UserException extends BaseException
+{
+    private static final long serialVersionUID = 1L;
+
+    public UserException(String code, Object[] args)
+    {
+        super("user", code, args, null);
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/exception/user/UserPasswordNotMatchException.java

+package com.ruoyi.common.exception.user;
+
+/**
+ * 用户密码不正确或不符合规范异常类
+ * 
+ * @author ruoyi
+ */
+public class UserPasswordNotMatchException extends UserException
+{
+    private static final long serialVersionUID = 1L;
+
+    public UserPasswordNotMatchException()
+    {
+        super("user.password.not.match", null);
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/utils/Arith.java

+package com.ruoyi.common.utils;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+/**
+ * 精确的浮点数运算
+ * 
+ * @author ruoyi
+ */
+public class Arith
+{
+
+    /** 默认除法运算精度 */
+    private static final int DEF_DIV_SCALE = 10;
+
+    /** 这个类不能实例化 */
+    private Arith()
+    {
+    }
+
+    /**
+     * 提供精确的加法运算。
+     * @param v1 被加数
+     * @param v2 加数
+     * @return 两个参数的和
+     */
+    public static double add(double v1, double v2)
+    {
+        BigDecimal b1 = new BigDecimal(Double.toString(v1));
+        BigDecimal b2 = new BigDecimal(Double.toString(v2));
+        return b1.add(b2).doubleValue();
+    }
+
+    /**
+     * 提供精确的减法运算。
+     * @param v1 被减数
+     * @param v2 减数
+     * @return 两个参数的差
+     */
+    public static double sub(double v1, double v2)
+    {
+        BigDecimal b1 = new BigDecimal(Double.toString(v1));
+        BigDecimal b2 = new BigDecimal(Double.toString(v2));
+        return b1.subtract(b2).doubleValue();
+    }
+
+    /**
+     * 提供精确的乘法运算。
+     * @param v1 被乘数
+     * @param v2 乘数
+     * @return 两个参数的积
+     */
+    public static double mul(double v1, double v2)
+    {
+        BigDecimal b1 = new BigDecimal(Double.toString(v1));
+        BigDecimal b2 = new BigDecimal(Double.toString(v2));
+        return b1.multiply(b2).doubleValue();
+    }
+
+    /**
+     * 提供（相对）精确的除法运算，当发生除不尽的情况时，精确到
+     * 小数点以后10位，以后的数字四舍五入。
+     * @param v1 被除数
+     * @param v2 除数
+     * @return 两个参数的商
+     */
+    public static double div(double v1, double v2)
+    {
+        return div(v1, v2, DEF_DIV_SCALE);
+    }
+
+    /**
+     * 提供（相对）精确的除法运算。当发生除不尽的情况时，由scale参数指
+     * 定精度，以后的数字四舍五入。
+     * @param v1 被除数
+     * @param v2 除数
+     * @param scale 表示表示需要精确到小数点以后几位。
+     * @return 两个参数的商
+     */
+    public static double div(double v1, double v2, int scale)
+    {
+        if (scale < 0)
+        {
+            throw new IllegalArgumentException(
+                    "The scale must be a positive integer or zero");
+        }
+        BigDecimal b1 = new BigDecimal(Double.toString(v1));
+        BigDecimal b2 = new BigDecimal(Double.toString(v2));
+        if (b1.compareTo(BigDecimal.ZERO) == 0)
+        {
+            return BigDecimal.ZERO.doubleValue();
+        }
+        return b1.divide(b2, scale, RoundingMode.HALF_UP).doubleValue();
+    }
+
+    /**
+     * 提供精确的小数位四舍五入处理。
+     * @param v 需要四舍五入的数字
+     * @param scale 小数点后保留几位
+     * @return 四舍五入后的结果
+     */
+    public static double round(double v, int scale)
+    {
+        if (scale < 0)
+        {
+            throw new IllegalArgumentException(
+                    "The scale must be a positive integer or zero");
+        }
+        BigDecimal b = new BigDecimal(Double.toString(v));
+        BigDecimal one = new BigDecimal("1");
+        return b.divide(one, scale, RoundingMode.HALF_UP).doubleValue();
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/utils/DateUtils.java

+package com.ruoyi.common.utils;
+
+import java.lang.management.ManagementFactory;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import org.apache.commons.lang3.time.DateFormatUtils;
+
+/**
+ * 时间工具类
+ * 
+ * @author ruoyi
+ */
+public class DateUtils extends org.apache.commons.lang3.time.DateUtils
+{
+    public static String YYYY = "yyyy";
+
+    public static String YYYY_MM = "yyyy-MM";
+
+    public static String YYYY_MM_DD = "yyyy-MM-dd";
+
+    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";
+
+    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
+    
+    private static String[] parsePatterns = {
+            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM", 
+            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
+            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};
+
+    /**
+     * 获取当前Date型日期
+     * 
+     * @return Date() 当前日期
+     */
+    public static Date getNowDate()
+    {
+        return new Date();
+    }
+
+    /**
+     * 获取当前日期, 默认格式为yyyy-MM-dd
+     * 
+     * @return String
+     */
+    public static String getDate()
+    {
+        return dateTimeNow(YYYY_MM_DD);
+    }
+
+    public static final String getTime()
+    {
+        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
+    }
+
+    public static final String dateTimeNow()
+    {
+        return dateTimeNow(YYYYMMDDHHMMSS);
+    }
+
+    public static final String dateTimeNow(final String format)
+    {
+        return parseDateToStr(format, new Date());
+    }
+
+    public static final String dateTime(final Date date)
+    {
+        return parseDateToStr(YYYY_MM_DD, date);
+    }
+
+    public static final String parseDateToStr(final String format, final Date date)
+    {
+        return new SimpleDateFormat(format).format(date);
+    }
+
+    public static final Date dateTime(final String format, final String ts)
+    {
+        try
+        {
+            return new SimpleDateFormat(format).parse(ts);
+        }
+        catch (ParseException e)
+        {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * 日期路径 即年/月/日 如2018/08/08
+     */
+    public static final String datePath()
+    {
+        Date now = new Date();
+        return DateFormatUtils.format(now, "yyyy/MM/dd");
+    }
+
+    /**
+     * 日期路径 即年/月/日 如20180808
+     */
+    public static final String dateTime()
+    {
+        Date now = new Date();
+        return DateFormatUtils.format(now, "yyyyMMdd");
+    }
+
+    /**
+     * 日期型字符串转化为日期 格式
+     */
+    public static Date parseDate(Object str)
+    {
+        if (str == null)
+        {
+            return null;
+        }
+        try
+        {
+            return parseDate(str.toString(), parsePatterns);
+        }
+        catch (ParseException e)
+        {
+            return null;
+        }
+    }
+    
+    /**
+     * 获取服务器启动时间
+     */
+    public static Date getServerStartDate()
+    {
+        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
+        return new Date(time);
+    }
+
+    /**
+     * 计算两个时间差
+     */
+    public static String getDatePoor(Date endDate, Date nowDate)
+    {
+        long nd = 1000 * 24 * 60 * 60;
+        long nh = 1000 * 60 * 60;
+        long nm = 1000 * 60;
+        // long ns = 1000;
+        // 获得两个时间的毫秒时间差异
+        long diff = endDate.getTime() - nowDate.getTime();
+        // 计算差多少天
+        long day = diff / nd;
+        // 计算差多少小时
+        long hour = diff % nd / nh;
+        // 计算差多少分钟
+        long min = diff % nd % nh / nm;
+        // 计算差多少秒//输出结果
+        // long sec = diff % nd % nh % nm / ns;
+        return day + "天" + hour + "小时" + min + "分钟";
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/utils/IdUtils.java

+package com.ruoyi.common.utils;
+
+import com.ruoyi.common.core.lang.UUID;
+
+/**
+ * ID生成器工具类
+ * 
+ * @author ruoyi
+ */
+public class IdUtils
+{
+    /**
+     * 获取随机UUID
+     * 
+     * @return 随机UUID
+     */
+    public static String randomUUID()
+    {
+        return UUID.randomUUID().toString();
+    }
+
+    /**
+     * 简化的UUID，去掉了横线
+     * 
+     * @return 简化的UUID，去掉了横线
+     */
+    public static String simpleUUID()
+    {
+        return UUID.randomUUID().toString(true);
+    }
+
+    /**
+     * 获取随机UUID，使用性能更好的ThreadLocalRandom生成UUID
+     * 
+     * @return 随机UUID
+     */
+    public static String fastUUID()
+    {
+        return UUID.fastUUID().toString();
+    }
+
+    /**
+     * 简化的UUID，去掉了横线，使用性能更好的ThreadLocalRandom生成UUID
+     * 
+     * @return 简化的UUID，去掉了横线
+     */
+    public static String fastSimpleUUID()
+    {
+        return UUID.fastUUID().toString(true);
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/utils/LogUtils.java

+package com.ruoyi.common.utils;
+
+/**
+ * 处理并记录日志文件
+ * 
+ * @author ruoyi
+ */
+public class LogUtils
+{
+    public static String getBlock(Object msg)
+    {
+        if (msg == null)
+        {
+            msg = "";
+        }
+        return "[" + msg.toString() + "]";
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/utils/MessageUtils.java

+package com.ruoyi.common.utils;
+
+import org.springframework.context.MessageSource;
+import org.springframework.context.i18n.LocaleContextHolder;
+import com.ruoyi.common.utils.spring.SpringUtils;
+
+/**
+ * 获取i18n资源文件
+ * 
+ * @author ruoyi
+ */
+public class MessageUtils
+{
+    /**
+     * 根据消息键和参数 获取消息 委托给spring messageSource
+     *
+     * @param code 消息键
+     * @param args 参数
+     * @return 获取国际化翻译值
+     */
+    public static String message(String code, Object... args)
+    {
+        MessageSource messageSource = SpringUtils.getBean(MessageSource.class);
+        return messageSource.getMessage(code, args, LocaleContextHolder.getLocale());
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/utils/SecurityUtils.java

+package com.ruoyi.common.utils;
+
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import com.ruoyi.common.constant.HttpStatus;
+import com.ruoyi.common.exception.CustomException;
+import com.ruoyi.framework.security.LoginUser;
+
+/**
+ * 安全服务工具类
+ * 
+ * @author ruoyi
+ */
+public class SecurityUtils
+{
+    /**
+     * 获取用户账户
+     **/
+    public static String getUsername()
+    {
+        try
+        {
+            return getLoginUser().getUsername();
+        }
+        catch (Exception e)
+        {
+            throw new CustomException("获取用户账户异常", HttpStatus.UNAUTHORIZED);
+        }
+    }
+
+    /**
+     * 获取用户
+     **/
+    public static LoginUser getLoginUser()
+    {
+        try
+        {
+            return (LoginUser) getAuthentication().getPrincipal();
+        }
+        catch (Exception e)
+        {
+            throw new CustomException("获取用户信息异常", HttpStatus.UNAUTHORIZED);
+        }
+    }
+
+    /**
+     * 获取Authentication
+     */
+    public static Authentication getAuthentication()
+    {
+        return SecurityContextHolder.getContext().getAuthentication();
+    }
+
+    /**
+     * 生成BCryptPasswordEncoder密码
+     *
+     * @param password 密码
+     * @return 加密字符串
+     */
+    public static String encryptPassword(String password)
+    {
+        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
+        return passwordEncoder.encode(password);
+    }
+
+    /**
+     * 判断密码是否相同
+     *
+     * @param rawPassword 真实密码
+     * @param encodedPassword 加密后字符
+     * @return 结果
+     */
+    public static boolean matchesPassword(String rawPassword, String encodedPassword)
+    {
+        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
+        return passwordEncoder.matches(rawPassword, encodedPassword);
+    }
+
+    /**
+     * 是否为管理员
+     * 
+     * @param userId 用户ID
+     * @return 结果
+     */
+    public static boolean isAdmin(Long userId)
+    {
+        return userId != null && 1L == userId;
+    }
+}

ruoyi/src/main/java/com/ruoyi/common/utils/ServletUtils.java

+package com.ruoyi.common.utils;
+
+import java.io.IOException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import org.springframework.web.context.request.RequestAttributes;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
+import com.ruoyi.common.core.text.Convert;
+
+/**
+ * 客户端工具类
+ * 
+ * @author ruoyi
+ */
+public class ServletUtils
+{
+    /**
+     * 获取String参数
+     */
+    public static String getParameter(String name)
+    {
+        return getRequest().getParameter(name);
+    }
+
+    /**
+     * 获取String参数
+     */
+    public static String getParameter(String name, String defaultValue)
+    {
+        return Convert.toStr(getRequest().getParameter(name), defaultValue);
+    }
+
+    /**
+     * 获取Integer参数
+     */
+    public static Integer getParameterToInt(String name)
+    {
+        return Convert.toInt(getRequest().getParameter(name));
+    }
+
+    /**
+     * 获取Integer参数
+     */
+    public static Integer getParameterToInt(String name, Integer defaultValue)
+    {
+        return Convert.toInt(getRequest().getParameter(name), defaultValue);
+    }
+
+    /**
+     * 获取request
+     */
+    public static HttpServletRequest getRequest()
+    {
+        return getRequestAttributes().getRequest();
+    }
+
+    /**
+     * 获取response
+     */
+    public static HttpServletResponse getResponse()
+    {
+        return getRequestAttributes().getResponse();
+    }
+
+    /**
+     * 获取session
+     */
+    public static HttpSession getSession()
+    {
+        return getRequest().getSession();
+    }
+
+    public static ServletRequestAttributes getRequestAttributes()
+    {
+        RequestAttributes attributes = RequestContextHolder.getRequestAttributes();
+        return (ServletRequestAttributes) attributes;
+    }
+
+    /**
+     * 将字符串渲染到客户端
+     * 
+     * @param response 渲染对象
+     * @param string 待渲染的字符串
+     * @return null
+     */
+    public static String renderString(HttpServletResponse response, String string)
+    {
+        try
+        {
+            response.setStatus(200);
+            response.setContentType("application/json");
+            response.setCharacterEncoding("utf-8");
+            response.getWriter().print(string);
+        }
+        catch (IOException e)
+        {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    /**
+     * 是否是Ajax异步请求
+     * 
+     * @param request
+     */
+    public static boolean isAjaxRequest(HttpServletRequest request)
+    {
+        String accept = request.getHeader("accept");
+        if (accept != null && accept.indexOf("application/json") != -1)
+        {
+            return true;
+        }
+
+        String xRequestedWith = request.getHeader("X-Requested-With");
+        if (xRequestedWith != null && xRequestedWith.indexOf("XMLHttpRequest") != -1)
+        {
+            return true;
+        }
+
+        String uri = request.getRequestURI();
+        if (StringUtils.inStringIgnoreCase(uri, ".json", ".xml"))
+        {
+            return true;
+        }
+
+        String ajax = request.getParameter("__ajax");
+        if (StringUtils.inStringIgnoreCase(ajax, "json", "xml"))
+        {
+            return true;
+        }
+        return false;
+    }
+}