lujinfeifly · lujinfeifly · Mar 27, 2016
diff --git a/build.gradle b/build.gradle
@@ -0,0 +1,5 @@
+apply plugin: 'java'
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+}
diff --git a/freejava.iml b/freejava.iml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id=":freejava" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/.." external.system.id="GRADLE" external.system.module.group="Test" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="android-gradle" name="Android-Gradle">
+      <configuration>
+        <option name="GRADLE_PROJECT_PATH" value=":freejava" />
+      </configuration>
+    </facet>
+    <facet type="java-gradle" name="Java-Gradle">
+      <configuration>
+        <option name="BUILD_FOLDER_PATH" value="$MODULE_DIR$/build" />
+        <option name="BUILDABLE" value="true" />
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8" inherit-compiler-output="false">
+    <output url="file://$MODULE_DIR$/build/classes/main" />
+    <output-test url="file://$MODULE_DIR$/build/classes/test" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
+      <excludeFolder url="file://$MODULE_DIR$/.gradle" />
+      <excludeFolder url="file://$MODULE_DIR$/build" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
diff --git a/src/main/java/com/miludeer/Milu.java b/src/main/java/com/miludeer/Milu.java
@@ -0,0 +1,7 @@
+package com.miludeer;
+
+public class Milu {
+    public static String Msg() {
+        return "Welcome to use Miludeer lib!";
+    }
+}
diff --git a/src/main/java/com/miludeer/basic/MEncrypt.java b/src/main/java/com/miludeer/basic/MEncrypt.java
@@ -0,0 +1,126 @@
+package com.miludeer.basic;
+
+import java.io.UnsupportedEncodingException;
+import java.security.InvalidKeyException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.KeyGenerator;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+import javax.crypto.spec.SecretKeySpec;
+
+/**
+ * Created by lu on 16/3/27.
+ */
+public class MEncrypt {
+
+    /**
+     * 获得字符串的md5字符串，大写
+     * @param s
+     * @return
+     */
+    public final static String MD5(String s) {
+        char hexDigits[]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
+        try {
+            byte[] btInput = s.getBytes();
+            // 获得MD5摘要算法的 MessageDigest 对象
+            MessageDigest mdInst = MessageDigest.getInstance("MD5");
+            // 使用指定的字节更新摘要
+            mdInst.update(btInput);
+            // 获得密文
+            byte[] md = mdInst.digest();
+            // 把密文转换成十六进制的字符串形式
+            int j = md.length;
+            char str[] = new char[j * 2];
+            int k = 0;
+            for (int i = 0; i < j; i++) {
+                byte byte0 = md[i];
+                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
+                str[k++] = hexDigits[byte0 & 0xf];
+            }
+            return new String(str);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    /**
+     * 获得字符串的md5字符串，小写
+     * @param s
+     * @return
+     */
+    public final static String md5(String s) {
+        return MD5(s).toLowerCase();
+    }
+
+    /**
+     * aes加密
+     *
+     * @param content 需要加密的内容
+     * @param password  加密密码
+     * @return
+     */
+    public static byte[] AESencrypt(String content, String password) {
+        try {
+            KeyGenerator kgen = KeyGenerator.getInstance("AES");
+            kgen.init(128, new SecureRandom(password.getBytes()));
+            SecretKey secretKey = kgen.generateKey();
+            byte[] enCodeFormat = secretKey.getEncoded();
+            SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
+            Cipher cipher = Cipher.getInstance("AES");// 创建密码器
+            byte[] byteContent = content.getBytes("utf-8");
+            cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化
+            byte[] result = cipher.doFinal(byteContent);
+            return result; // 加密
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        } catch (NoSuchPaddingException e) {
+            e.printStackTrace();
+        } catch (InvalidKeyException e) {
+            e.printStackTrace();
+        } catch (UnsupportedEncodingException e) {
+            e.printStackTrace();
+        } catch (IllegalBlockSizeException e) {
+            e.printStackTrace();
+        } catch (BadPaddingException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    /** aes解密
+     * @param content  待解密内容
+     * @param password 解密密钥
+     * @return
+     */
+    public static byte[] AESdecrypt(byte[] content, String password) {
+        try {
+            KeyGenerator kgen = KeyGenerator.getInstance("AES");
+            kgen.init(128, new SecureRandom(password.getBytes()));
+            SecretKey secretKey = kgen.generateKey();
+            byte[] enCodeFormat = secretKey.getEncoded();
+            SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
+            Cipher cipher = Cipher.getInstance("AES");// 创建密码器
+            cipher.init(Cipher.DECRYPT_MODE, key);// 初始化
+            byte[] result = cipher.doFinal(content);
+            return result; // 加密
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        } catch (NoSuchPaddingException e) {
+            e.printStackTrace();
+        } catch (InvalidKeyException e) {
+            e.printStackTrace();
+        } catch (IllegalBlockSizeException e) {
+            e.printStackTrace();
+        } catch (BadPaddingException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}
diff --git a/src/main/java/com/miludeer/basic/MString.java b/src/main/java/com/miludeer/basic/MString.java
@@ -0,0 +1,40 @@
+package com.miludeer.basic;
+
+/**
+ * 字符串处理
+ * Created by lu on 16/3/27.
+ */
+public class MString {
+
+    /**将二进制转换成16进制样式字符串
+     * @param buf
+     * @return
+     */
+    public static String parseByte2HexStr(byte buf[]) {
+        StringBuffer sb = new StringBuffer();
+        for (int i = 0; i < buf.length; i++) {
+            String hex = Integer.toHexString(buf[i] & 0xFF);
+            if (hex.length() == 1) {
+                hex = '0' + hex;
+            }
+            sb.append(hex.toUpperCase());
+        }
+        return sb.toString();
+    }
+
+    /**将16进制转换为二进制byte[] 数组
+     * @param hexStr
+     * @return
+     */
+    public static byte[] parseHexStr2Byte(String hexStr) {
+        if (hexStr.length() < 1)
+            return null;
+        byte[] result = new byte[hexStr.length()/2];
+        for (int i = 0;i< hexStr.length()/2; i++) {
+            int high = Integer.parseInt(hexStr.substring(i*2, i*2+1), 16);
+            int low = Integer.parseInt(hexStr.substring(i*2+1, i*2+2), 16);
+            result[i] = (byte) (high * 16 + low);
+        }
+        return result;
+    }
+}
diff --git a/src/main/java/com/miludeer/basic/MTime.java b/src/main/java/com/miludeer/basic/MTime.java
@@ -0,0 +1,66 @@
+package com.miludeer.basic;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+/**
+ * 日期时间处理
+ * Created by lu on 16/3/27.
+ */
+public class MTime {
+    private String commonFormat = "yyyy-MM-dd HH:mm:ss";
+    private Date time;
+
+    /**
+     *
+     * @param itime 时间的long值
+     */
+    public MTime(long itime) {
+        this.time = new Date(itime);
+    }
+
+    /**
+     *
+     * @param date 时间的Date值
+     */
+    public MTime(Date date) {
+        this.time = date;
+    }
+
+    /**
+     *
+     * @param strTime 时间字符串
+     * @param format 时间格式
+     */
+    public MTime(String strTime, String format) {
+        SimpleDateFormat sdf = new SimpleDateFormat(format);
+        Date date = null;
+        try {
+            date = sdf.parse(strTime);
+        } catch (ParseException e) {
+            date = new Date(0);
+        }
+        this.time = date;
+    }
+
+
+
+    public long getTime() {
+        return this.time.getTime();
+    }
+
+    public String getCommonTime() {
+        SimpleDateFormat sdf = new SimpleDateFormat(commonFormat);
+        return sdf.format(this.time);
+    }
+
+    public String getSpecialTime(String format) {
+        SimpleDateFormat sdf = new SimpleDateFormat(format);
+        return sdf.format(this.time);
+    }
+
+    public long timeDiffNow() {
+        return this.time.getTime() - new Date().getTime();
+    }
+}