brakeService/CombinatorialQuery.java

package com.happy.unitil;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

/**
 * 前端框架复合查询工具类
 * 
 * @author zjs
 * 
 */
public class CombinatorialQuery {
	// 组合条件查询
	public static String query(String condition) {
		String json = condition;
		String sql = "where 1=1 ";
		JSONArray jsonArray = JSONArray.fromObject(json);
		String join = "";
		for (int j = 0; j < jsonArray.size(); j++) {
			JSONObject jsonObject = jsonArray.getJSONObject(j);

			String lb = jsonObject.getString("lb");
			String field = jsonObject.getString("field");
			String op = jsonObject.getString("op");
			String value = jsonObject.getString("value");
			String rb = jsonObject.getString("rb");

			if (!field.equals("")) {

				if (op.equals("contains")) {// 包含
					sql += join + " " + field + " like '%" + value + "%' ";
				} else if (op.equals("equal")) {// 等于
					sql += join + " " + field + "='" + value + "' ";
				} else if (op.equals("notequal")) {// 不等于
					sql += join + " " + field + "<>'" + value + "' ";
				} else if (op.equals("greater")) {// 大于
					sql += join + " " + field + ">'" + value + "' ";
				} else if (op.equals("greaterorequal")) {// 大于或等于
					sql += join + " " + field + ">='" + value + "' ";
				} else if (op.equals("less")) {// 小于
					sql += join + " " + field + "<'" + value + "' ";
				} else if (op.equals("lessorequal")) {// 小于或等于
					sql += join + " " + field + "<='" + value + "' ";
				} else if (op.equals("beginwith")) {// 以....开头
					sql += join + " " + field + " like '" + value + "%' ";
				} else if (op.equals("endwith")) {// 以....结尾
					sql += join + " " + field + " like '%" + value + "' ";
				}
			}
		}
		if (!sql.equals("where ")) {
			return sql;
		}
		return null;
	}

	/**
	 * 复合查询工具类
	 * 
	 * @param
	 *            //第page页
	 * @param
	 *            //每页行数
	 * @param advanceFilter
	 *            //组合查询条件
	 * @param sort
	 *            //排序字段名
	 * @param order
	 *            //排序方式
	 * @param filterRules
	 *            //过滤条件
	 * @return
	 */
	public static String queryOne(String advanceFilter, String sort,
			String order, String filterRules) {
		String sql = "where 1=1 ";
		if (advanceFilter != null && !advanceFilter.equals("[]")) {
			// System.out.println("advanceFilter有条件");

			String json = advanceFilter;
			JSONArray jsonArray = JSONArray.fromObject(json);
			for (int j = 0; j < jsonArray.size(); j++) {
				JSONObject jsonObject = jsonArray.getJSONObject(j);
				String join = jsonObject.getString("join");
				String lb = jsonObject.getString("lb");
				String field = jsonObject.getString("field");
				String op = jsonObject.getString("op");
				String value = jsonObject.getString("value");
				String rb = jsonObject.getString("rb");

				if (!field.equals("")) {

					if (op.equals("contains")) {// 包含
						sql += join + " " + field + " like '%" + value + "%' ";
					} else if (op.equals("equal")) {// 等于
						sql += join + " " + field + "='" + value + "' ";
					} else if (op.equals("notequal")) {// 不等于
						sql += join + " " + field + "<>'" + value + "' ";
					} else if (op.equals("greater")) {// 大于
						sql += join + " " + field + ">'" + value + "' ";
					} else if (op.equals("greaterorequal")) {// 大于或等于
						sql += join + " " + field + ">='" + value + "' ";
					} else if (op.equals("less")) {// 小于
						sql += join + " " + field + "<'" + value + "' ";
					} else if (op.equals("lessorequal")) {// 小于或等于
						sql += join + " " + field + "<='" + value + "' ";
					} else if (op.equals("beginwith")) {// 以....开头
						sql += join + " " + field + " like '" + value + "%' ";
					} else if (op.equals("endwith")) {// 以....结尾
						sql += join + " " + field + " like '%" + value + "' ";
					}
				}
			}
		}
		if (filterRules != null && !filterRules.equals("[]")) {
			// System.out.println("filterRules有条件");

			String json = filterRules;
			JSONArray jsonArray = JSONArray.fromObject(json);
			JSONObject jsonObject = jsonArray.getJSONObject(0);
			String field = jsonObject.getString("field");
			String value = jsonObject.getString("value");
			sql += "and " + field + " like '%" + value + "%' ";

		}
		sql += "order by " ;
		if (sort != null) {
			// System.out.println("sort有排序");
			sql +=  sort + " " + order + " ";
		} else {
			sql +=  " id desc ";
		}
		return sql;
	}

	// 组合条件+排序条件查询
	public static String queryTwo(String string1, String string2, String string3) {
		System.out.println(string1);
		System.out.println(string2);
		System.out.println(string3);
		return null;
	}

	public static void main(String[] args) {
		double aa = -19162431.1254;
		String a = "19162b431";
		String b = "-19162431a1254";
		String c = "中文";
		System.out.println(isNumericZidai(Double.toString(aa)));
		System.out.println(isNumericZidai(a));
		System.out.println(isNumericZidai(b));
		System.out.println(isNumericZidai(c));
	}

	public static boolean isNumericZidai(String str) {
		for (int i = 0; i < str.length(); i++) {
			// System.out.println(str.charAt(i));
			if (!Character.isDigit(str.charAt(i))) {
				return false;
			}
		}
		return true;
	}

}