update

protocol/src/main/java/com/zfoo/protocol/util/CsvUtils.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2020 The zfoo Authors
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
+ * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and limitations under the License.
+ */
+package com.zfoo.protocol.util;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+
+/**
+ * @author jaysunxiao
+ */
+public class CsvUtils {
+
+    /**
+     * CSV 字符串转对象列表
+     *
+     * @param csv   CSV 格式字符串，第一行是表头
+     * @param clazz 目标类
+     * @param <T>   泛型类型
+     * @return 对象列表
+     */
+    public static <T> List<T> parse(String csv, Class<T> clazz) {
+        if (StringUtils.isEmpty(csv)) {
+            return Collections.emptyList();
+        }
+
+        var lines = csv.split(FileUtils.LS_REGEX);
+        if (lines.length < 2) {
+            return Collections.emptyList();
+        }
+
+        var result = new ArrayList<T>();
+        // 第一行作为表头
+        var headers = lines[0].split(StringUtils.COMMA_REGEX);
+        var headerIndex = new HashMap<String, Integer>();
+        for (var i = 0; i < headers.length; i++) {
+            headerIndex.put(headers[i].trim(), i);
+        }
+
+        var fields = ReflectionUtils.notStaticAndTransientFields(clazz);
+        fields.forEach(it -> ReflectionUtils.makeAccessible(it));
+        // 从第二行开始解析
+        for (var i = 1; i < lines.length; i++) {
+            var values = lines[i].split(StringUtils.COMMA_REGEX);
+
+            T obj = ReflectionUtils.newInstance(clazz);
+            for (var field : fields) {
+                if (!headerIndex.containsKey(field.getName())) {
+                    continue;
+                }
+                var idx = headerIndex.get(field.getName());
+                if (idx < values.length) {
+                    var raw = values[idx].trim();
+                    Object converted = ReflectionUtils.convertSimple(raw, field.getType());
+                    ReflectionUtils.setField(field, obj, converted);
+                }
+            }
+            result.add(obj);
+        }
+        return result;
+    }
+
+}

protocol/src/main/java/com/zfoo/protocol/util/DomUtils.java

@@ -46,7 +46,7 @@ public abstract class DomUtils {
         try {
             return MAPPER.readValue(xml, clazz);
         } catch (IOException e) {
-            throw new RunException("将xml字符串[xml:{}]转换为对象[{}]异常", xml, clazz, e);
+            throw new RunException("convert xml:[{}] to class:[{}] exception", xml, clazz, e);
         }
     }
 
@@ -56,7 +56,7 @@ public abstract class DomUtils {
             var sr = f.createXMLStreamReader(new FileInputStream(xmlFile));
             return MAPPER.readValue(sr, clazz);
         } catch (Exception e) {
-            throw new RunException("将xml文件[xml:{}]转换为对象[{}]异常", xmlFile, clazz, e);
+            throw new RunException("convert file xml:[{}] to class:[{}] exception", xmlFile.getName(), clazz, e);
         }
     }
 
@@ -64,7 +64,7 @@ public abstract class DomUtils {
         try {
             return MAPPER.readValue(xmlInputStream, clazz);
         } catch (Exception e) {
-            throw new RunException("将xmlInputStream转换为对象[{}]异常", clazz, e);
+            throw new RunException("convert input stream to class:[{}] exception", clazz, e);
         }
     }
 

protocol/src/main/java/com/zfoo/protocol/util/JsonUtils.java

@@ -69,7 +69,7 @@ public abstract class JsonUtils {
         try {
             return MAPPER.readValue(json, clazz);
         } catch (Exception e) {
-            throw new RunException("将json字符串[json:{}]转换为对象[class:{}]时异常", json, clazz, e);
+            throw new RunException("convert json:[{}] to class:[{}] exception", json, clazz, e);
         }
     }
 
@@ -78,7 +78,7 @@ public abstract class JsonUtils {
         try {
             return MAPPER.writeValueAsString(object);
         } catch (Exception e) {
-            throw new RunException("将对象[object:{}]转换为json字符串时异常", object, e);
+            throw new RunException("convert class:[{}] to json exception", object.getClass(), e);
         }
     }
 
@@ -87,7 +87,7 @@ public abstract class JsonUtils {
         try {
             return MAPPER.writerWithDefaultPrettyPrinter().writeValueAsString(object);
         } catch (Exception e) {
-            throw new RunException("将对象[object:{}]转换为json字符串时异常", object, e);
+            throw new RunException("convert class:[{}] to json exception", object.getClass(), e);
         }
     }
 
@@ -98,7 +98,7 @@ public abstract class JsonUtils {
         try {
             return MAPPER_TURBO.readValue(json, clazz);
         } catch (Exception e) {
-            throw new RunException("将json字符串[json:{}]转换为对象[class:{}]时异常", json, clazz, e);
+            throw new RunException("convert json:[{}] to class:[{}] exception", json, clazz, e);
         }
     }
 
@@ -109,7 +109,7 @@ public abstract class JsonUtils {
         try {
             return MAPPER_TURBO.writeValueAsString(object);
         } catch (Exception e) {
-            throw new RunException("将对象[object:{}]转换为json字符串时异常", object, e);
+            throw new RunException("convert class:[{}] to json exception", object.getClass(), e);
         }
     }
 
@@ -118,7 +118,7 @@ public abstract class JsonUtils {
         try {
             return MAPPER.readValue(json, collectionType);
         } catch (Exception e) {
-            throw new RunException("将json字符串[json:{}]转换为List[{}]异常", json, clazz, e);
+            throw new RunException("convert json:[{}] to List:[{}] exception", json, clazz, e);
         }
     }
 
@@ -128,7 +128,7 @@ public abstract class JsonUtils {
         try {
             return MAPPER.readValue(json, collectionType);
         } catch (Exception e) {
-            throw new RunException("将json字符串[json:{}]转换为Set[{}]异常", json, clazz, e);
+            throw new RunException("convert json:[{}] to Set:[{}] exception", json, clazz, e);
         }
     }
 
@@ -137,7 +137,7 @@ public abstract class JsonUtils {
             var ct = MAPPER.getTypeFactory().constructCollectionType(collectionType, elementType);
             return MAPPER.readValue(json, ct);
         } catch (IOException e) {
-            throw new RunException("将json字符串[json:{}]转换为Collection[{}]异常", json, collectionType, e);
+            throw new RunException("convert json:[{}] to Collection:[{}] exception", json, collectionType, e);
         }
     }
 
@@ -146,7 +146,7 @@ public abstract class JsonUtils {
         try {
             return MAPPER.readValue(json, mapType);
         } catch (Exception e) {
-            throw new RunException("将json字符串[json:{}]转换为Map[[key:{}], [value:{}]]异常", json, kClazz, vClazz, e);
+            throw new RunException("convert json:[{}] to Map key:[{}] value:[{}] exception", json, kClazz, vClazz, e);
         }
     }
 
@@ -155,7 +155,7 @@ public abstract class JsonUtils {
         try {
             return MAPPER.readValue(json, arrayType);
         } catch (Exception e) {
-            throw new RunException("将json字符串[{}]转换为数组[array:{}]异常", json, clazz, e);
+            throw new RunException("convert json:[{}] to Array:[{}] exception", json, clazz, e);
         }
     }
 
@@ -189,7 +189,7 @@ public abstract class JsonUtils {
                 }
             }
         } catch (IOException e) {
-            throw new RunException("将json字符串[json:{}]转换为jsonTree[nodeName:{}]异常", json, nodeName, e);
+            throw new RunException("convert json:[{}] to JsonTree:[{}] exception", json, nodeName, e);
         }
         return null;
     }
@@ -215,7 +215,7 @@ public abstract class JsonUtils {
             }
             return jsonMap;
         } catch (IOException e) {
-            throw new RunException("将json字符串[json:{}]转换为jsonMap异常", json, e);
+            throw new RunException("convert json:[{}] to JsonMap exception", json, e);
         }
     }
 }

protocol/src/main/java/com/zfoo/protocol/util/ReflectionUtils.java

@@ -352,5 +352,33 @@ public abstract class ReflectionUtils {
         }
     }
 
+    /**
+     * simple convert to simple primitive type, String
+     */
+    public static Object convertSimple(String value, Class<?> targetType) {
+        if (StringUtils.isBlank(value)) {
+            return null;
+        }
+
+        if (targetType == String.class) {
+            return value;
+        } else if (targetType == byte.class || targetType == Byte.class) {
+            return Byte.parseByte(value);
+        } else if (targetType == short.class || targetType == Short.class) {
+            return Short.parseShort(value);
+        } else if (targetType == int.class || targetType == Integer.class) {
+            return Integer.parseInt(value);
+        } else if (targetType == long.class || targetType == Long.class) {
+            return Long.parseLong(value);
+        } else if (targetType == float.class || targetType == Float.class) {
+            return Float.parseFloat(value);
+        } else if (targetType == double.class || targetType == Double.class) {
+            return Double.parseDouble(value);
+        } else if (targetType == boolean.class || targetType == Boolean.class) {
+            return Boolean.parseBoolean(value);
+        }
+        return null;
+    }
+
 }