'多表支持修改，完成1、列表配置，2、查询配置，3、导出配置'
This commit is contained in:
@@ -51,79 +51,110 @@ public class Kv<K,V> extends LinkedHashMap<K,V> {
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}
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public <T> T toBean(Class<T> type) {
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return (T) toBean(this, type);
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return toBean(this, type);
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}
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// 首字母大写
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private static Function<String, String> upFirst = (s) -> {
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return s.substring(0, 1).toUpperCase() + s.substring(1);
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};
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private static Map<Class, Class[]> clazzMap = new HashMap<>();
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/*private static Map<Class, Class[]> clazzMap = new HashMap<>();
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static {
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clazzMap.put(ArrayList.class, new Class[]{List.class, ArrayList.class, String.class});
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clazzMap.put(HashMap.class, new Class[]{Map.class, HashMap.class, String.class});
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clazzMap.put(Long.class, new Class[]{Long.class, Integer.class, long.class, int.class, short.class, String.class});
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clazzMap.put(String.class, new Class[]{String.class, Integer.class, Date.class});
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clazzMap.put(Double.class, new Class[]{Double.class, Long.class, Integer.class, long.class, int.class, short.class, String.class});
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}
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}*/
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private static Predicate<Class> isNumber = (t) -> {
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return t == Integer.class || t == int.class
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|| t == Long.class || t == long.class
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|| t == Double.class || t == double.class
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;
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};
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public static <T> T toBean(Map m, Class<T> type) {
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/*public static <T> T toBean2(Map m, Class<T> type) {
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try {
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Object obj = type.newInstance();
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m.forEach((k, v) -> {
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String methodName = "set" + upFirst.apply(k+"");
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Class[] clazzs = clazzMap.get(v == null ? null : v.getClass());
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if (clazzs == null) {
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//doc.set(k, v);
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} else {
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for (Class clazz : clazzs) {
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Method method = null;
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try {
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method = type.getDeclaredMethod(methodName, clazz);
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} catch (NoSuchMethodException e) {
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}
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if (method != null) {
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try {
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Object _v = toAs(v, clazz);
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//如发现 映射异常，打开下面的注释查看 进行映射的值，并对上面的值转换过程升级
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//System.out.printf("%s:%s %s%n", k,v, v.getClass());
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method.invoke(obj, _v);
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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} catch (InvocationTargetException e) {
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e.printStackTrace();
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}
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break;
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}
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}
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for (String k : (Set<String>)m.keySet()) {
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Object v = m.get(k);
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if (v == null) {
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continue;
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}
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});
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//得到目标方法
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String methodName = "set" + upFirst.apply(k + "");
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Method method = null;
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Class tClazz = null;
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try {
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method = type.getDeclaredMethod(methodName, tClazz = v.getClass());
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if (method == null) {
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Class[] clazzs = clazzMap.get(v == null ? null : v.getClass());
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if (clazzs == null) {
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//doc.set(k, v);
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} else {
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for (Class clazz : clazzs) {
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try {
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type.getMethods();
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method = type.getDeclaredMethod(methodName, tClazz = clazz);
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} catch (NoSuchMethodException e) {
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}
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}
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if (method != null) {
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try {
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Object _v = toAs(v, tClazz);
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//如发现 映射异常，打开下面的注释查看 进行映射的值，并对上面的值转换过程升级
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//System.out.printf("%s:%s %s%n", k,v, v.getClass());
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method.invoke(obj, _v);
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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} catch (InvocationTargetException e) {
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e.printStackTrace();
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}
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break;
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}
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}
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}
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} catch (NoSuchMethodException e) {
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e.printStackTrace();
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}
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if (method != null) {
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}
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//已知：key，value， 一个实例类型对象
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//找到目标方法
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//转换数据类型
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}
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return (T) obj;
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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}*/
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public static <T> T toAs(Object v, Class<T> clazz) {
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if (v == null) {
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return null;
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}
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if (v.getClass() == clazz) {
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} else if (v.getClass() == clazz) {
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return (T) v;
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} else if (clazz == String.class) {
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return (T) String.valueOf(v);
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}
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Object _v = null;
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try {
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if (v == null || "".equals(v)) {
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} else if (v.getClass() == Long.class && clazz != Long.class) {//多种数值类型的处理: Long => x
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} else if (v.getClass() == Long.class) {//多种数值类型的处理: Long => x
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switch (clazz.getSimpleName()) {
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case "int":
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case "Integer": _v = (int)(long) v; break;
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@@ -176,4 +207,103 @@ public class Kv<K,V> extends LinkedHashMap<K,V> {
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}
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return (T) _v;
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}
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public static <T> T toBean(Map map, Class<T> clazz) {
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//按照方法名 + 类型寻找，
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//按照方法名 寻找
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//+
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Object obj = null;
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try {
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obj = clazz.newInstance();
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} catch (InstantiationException e) {
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e.printStackTrace();
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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}
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for (String k : (Set<String>)map.keySet()) {
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Object v = map.get(k);
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if (v == null) continue;
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//寻找method
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try {
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String methodName = "set" + upFirst.apply(k);
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Class tClazz = null;
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Method method = null;
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try {
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method = clazz.getMethod(methodName, tClazz = v.getClass());
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} catch (NoSuchMethodException e) {
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//e.printStackTrace();
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}
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if (method == null) {
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for (Method _method : clazz.getMethods()) {
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if (methodName.equals(_method.getName()) && _method.getParameterCount() == 1) {
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method = _method;
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tClazz = _method.getParameterTypes()[0];
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}
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}
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}
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if (method == null) {
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for (Method _method : clazz.getMethods()) {
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if (methodName.equalsIgnoreCase(_method.getName()) && _method.getParameterCount() == 1) {
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method = _method;
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tClazz = _method.getParameterTypes()[0];
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}
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}
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}
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if (method != null) {
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method.invoke(obj, toAs(v, tClazz));
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}
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//没有方法，找属性注解
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if (method == null) {
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Field field = null;
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Field[] fields = clazz.getDeclaredFields();
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for (Field _field : fields) {
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To to = _field.getAnnotation(To.class);
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if (to != null && k.equals(to.value())) {
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field = _field;
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tClazz = _field.getType();
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break;
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}
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}
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/*if (field == null) {
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fields = clazz.getDeclaredFields();
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continue;
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}
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while (true){
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break;
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}*/
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if (field != null) {
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field.setAccessible(true);
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field.set(obj, toAs(v, tClazz));
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}
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}
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} catch (IllegalAccessException | InvocationTargetException e) {
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e.printStackTrace();
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}
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}
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return (T) obj;
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}
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public static void main(String[] args) {
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Map map = new HashMap<>();
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map.put("name", "xxxx");
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map.put("age", 12);
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map.put("abx", 123);
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User user = toBean(map, User.class);
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System.out.println(user);
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}
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}
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12
src/main/java/net/tccn/base/To.java
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12
src/main/java/net/tccn/base/To.java
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@@ -0,0 +1,12 @@
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package net.tccn.base;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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/**
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* Created by liangxianyou at 2019/3/26 20:35.
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*/
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@Retention(RetentionPolicy.RUNTIME)
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public @interface To {
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String value();
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}
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29
src/main/java/net/tccn/base/User.java
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29
src/main/java/net/tccn/base/User.java
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@@ -0,0 +1,29 @@
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package net.tccn.base;
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/**
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* Created by liangxianyou at 2019/3/26 19:36.
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*/
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public class User {
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private String name;
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private int age;
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@To("")
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private float attr;
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public void setName(String name) {
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this.name = name;
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}
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public void setAge(int age) {
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this.age = age;
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}
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@Override
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public String toString() {
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return "User{" +
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"name='" + name + '\'' +
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", age=" + age +
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", attr='" + attr + '\'' +
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'}';
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}
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}
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23
src/main/java/net/tccn/base/UtilityExt.java
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23
src/main/java/net/tccn/base/UtilityExt.java
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@@ -0,0 +1,23 @@
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package net.tccn.base;
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import java.util.Set;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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/**
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* Created by liangxianyou at 2019/3/19 18:01.
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*/
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public class UtilityExt {
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public static <T> Set<T> streamConcat(Stream<T> ... streams) {
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Stream<T> stream = Stream.empty();
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for (int i = 0; i < streams.length-1; i++) {
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stream = Stream.concat(
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stream, streams[i]
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);
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}
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return stream.collect(Collectors.toSet());
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}
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}
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