Merge remote-tracking branch 'origin/master'

realtime/hologram-streaming/src/main/java/com/zhht/irn/utils/StringUtils.java

+package com.zhht.irn.utils;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class StringUtils {
+
+    /**
+     * 判断字符串是否为空
+     * @param str 字符串
+     * @return 是否为空
+     */
+    public static boolean isEmpty(String str) {
+        return str == null || "".equals(str);
+    }
+
+    /**
+     * 判断字符串是否不为空
+     * @param str 字符串
+     * @return 是否不为空
+     */
+    public static boolean isNotEmpty(String str) {
+        return str != null && !"".equals(str);
+    }
+
+    /**
+     * 截断字符串两侧的逗号
+     * @param str 字符串
+     * @return 字符串
+     */
+    public static String trimComma(String str) {
+        if(str.startsWith(",")) {
+            str = str.substring(1);
+        }
+        if(str.endsWith(",")) {
+            str = str.substring(0, str.length() - 1);
+        }
+        return str;
+    }
+
+    /**
+     * 补全两位数字
+     * @param str
+     * @return
+     */
+    public static String fulfuill(String str) {
+        if(str.length() == 1)
+            return "0" + str;
+        return str;
+    }
+
+
+    /**
+     * 补全num位数字
+     * @param str
+     * @return
+     */
+    public static String fulfuill(int num,String str) {
+        if(str.length() == num) {
+            return str;
+        } else {
+            int fulNum = num-str.length();
+            String tmpStr  =  "";
+            for(int i = 0; i < fulNum ; i++){
+                tmpStr += "0";
+            }
+            return tmpStr + str;
+        }
+    }
+
+
+    /**
+     * 从拼接的字符串中提取字段
+     * @param str 字符串
+     * @param delimiter 分隔符
+     * @param field 字段
+     * @return 字段值
+     * name=zhangsan|age=18
+     */
+    public static String getFieldFromConcatString(String str,
+                                                  String delimiter, String field) {
+        try {
+            String[] fields = str.split(delimiter);
+            for(String concatField : fields) {
+                // searchKeywords=|clickCategoryIds=1,2,3
+                if(concatField.split("=").length == 2) {
+                    String fieldName = concatField.split("=")[0];
+                    String fieldValue = concatField.split("=")[1];
+                    if(fieldName.equals(field)) {
+                        return fieldValue;
+                    }
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static void main(String[] args) {
+        System.out.println(setFieldInConcatString("name=xuruyun,age=55",",","name","bochen"));
+    }
+
+    /**
+     * 从拼接的字符串中给字段设置值
+     * @param str 字符串
+     * @param delimiter 分隔符
+     * @param field 字段名
+     * @param newFieldValue 新的field值
+     * @return 字段值
+     *  name=zhangsan123
+     *  age=18
+     *  name=zhangsan|age=18
+     */
+    public static String setFieldInConcatString(String str,
+                                                String delimiter, String field, String newFieldValue) {
+
+        // searchKeywords=iphone7|clickCategoryIds=1,2,3
+
+        String[] fields = str.split(delimiter);
+
+        for(int i = 0; i < fields.length; i++) {
+            String fieldName = fields[i].split("=")[0];
+            if(fieldName.equals(field)) {
+                String concatField = fieldName + "=" + newFieldValue;
+                fields[i] = concatField;
+                break;
+            }
+        }
+
+        StringBuffer buffer = new StringBuffer("");
+        for(int i = 0; i < fields.length; i++) {
+            buffer.append(fields[i]);
+            if(i < fields.length - 1) {
+                buffer.append("|");
+            }
+        }
+
+        return buffer.toString();
+    }
+
+    /**
+     * age=19
+     * name=jack
+     * @param str
+     * @param delimiter
+     *  name=zhangsan|age=18
+     * @return
+     *
+     */
+    public static Map<String, String> getKeyValuesFromConcatString(String str, String delimiter) {
+        Map<String, String> map = new HashMap<> ();
+        try {
+            String[] fields = str.split(delimiter);
+            for(String concatField : fields) {
+                // searchKeywords=|clickCategoryIds=1,2,3
+                if(concatField.split("=").length == 2) {
+                    String fieldName = concatField.split("=")[0];
+                    String fieldValue = concatField.split("=")[1];
+                    map.put(fieldName, fieldValue);
+                }
+            }
+            return map;
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static Integer convertStringtoInt(String str) {
+        try {
+            return Integer.parseInt(str);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+
+    }
+
+}