[monitor]feature:support linux cpu usage,memory usage,disk free (#76)

common/src/main/java/com/usthe/common/util/CommonUtil.java

@@ -2,6 +2,8 @@ package com.usthe.common.util;
 
 import lombok.extern.slf4j.Slf4j;
 
+import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -15,7 +17,7 @@ public class CommonUtil {
 
     private static final Pattern EMAIL_PATTERN = Pattern.compile("\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*");
 
-    private static final Pattern PHONE_PATTERN = Pattern.compile("^(((13[0-9])|(15[0-9])|(18[0-9])|(17[0-9]))+\\d{8})?$");
+    private static final Pattern PHONE_PATTERN = Pattern.compile("^(((13[0-9])|(14[0-9])|(15[0-9])|(16[0-9])|(19[0-9])|(18[0-9])|(17[0-9]))+\\d{8})?$");
 
     private static final int PHONE_LENGTH = 11;
 
@@ -36,6 +38,30 @@ public class CommonUtil {
         }
     }
 
+    /**
+     * 将字符串str,此字符串可能带单位,转换为double数字类型
+     * 将数值小数点限制到4位
+     * @param str string
+     * @param unit 字符串单位
+     * @return string格式的 double 数字 小数点最大到4位
+     */
+    public static String parseDoubleStr(String str, String unit) {
+        if (str == null || "".equals(str)) {
+            return null;
+        }
+        try {
+            if (unit != null && str.endsWith(unit)) {
+                str = str.substring(0, str.length() - unit.length());
+            }
+            BigDecimal bigDecimal = new BigDecimal(str);
+            double value = bigDecimal.setScale(4, RoundingMode.HALF_UP).doubleValue();
+            return String.valueOf(value);
+        } catch (Exception e) {
+            log.debug(e.getMessage(), e);
+            return null;
+        }
+    }
+
     /**
      * 邮箱格式校验
      * @param email 邮箱

common/src/test/java/com/usthe/common/util/CommonUtilTest.java

@@ -0,0 +1,40 @@
+package com.usthe.common.util;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * @author tom
+ * @date 2022/4/7 17:18
+ */
+class CommonUtilTest {
+
+    @Test
+    void testParseDoubleStr() {
+        assertEquals("9.3454",CommonUtil.parseDoubleStr("9.345435345", null));
+        assertEquals("9.3454",CommonUtil.parseDoubleStr("9.345435345%", "%"));
+        assertEquals("10.0",CommonUtil.parseDoubleStr("10%", "%"));
+        assertEquals("588.0",CommonUtil.parseDoubleStr("588Mb", "Mb"));
+    }
+
+    @Test
+    void validateEmail() {
+        assertTrue(CommonUtil.validateEmail("tom@usthe.com"));
+        assertTrue(CommonUtil.validateEmail("demo@qq.com"));
+        assertFalse(CommonUtil.validateEmail("tom.usthe.com"));
+    }
+
+    @Test
+    void validatePhoneNum() {
+        assertTrue(CommonUtil.validatePhoneNum("19234554432"));
+        assertTrue(CommonUtil.validatePhoneNum("13234554432"));
+        assertTrue(CommonUtil.validatePhoneNum("14234554432"));
+        assertTrue(CommonUtil.validatePhoneNum("16234554432"));
+        assertFalse(CommonUtil.validatePhoneNum("12234554432"));
+        assertFalse(CommonUtil.validatePhoneNum("11234554432"));
+        assertFalse(CommonUtil.validatePhoneNum("35234554432"));
+        assertFalse(CommonUtil.validatePhoneNum("46234554432"));
+    }
+
+}