jsonConfig处理日期及对象级联问题

 ?1 /** ?2 ?* ??3 ?*/ ?4 package com.hik.entity; ?5 ??6 import java.util.ArrayList; ?7 import java.util.Date; ?8 import java.util.List; ?9 ?10 import javax.persistence.Column; 11 import javax.persistence.Entity; 12 import javax.persistence.GeneratedValue; 13 import javax.persistence.Id; 14 import javax.persistence.JoinColumn; 15 import javax.persistence.ManyToOne; 16 import javax.persistence.OneToMany; 17 import javax.persistence.Table; 18 ?19 import org.hibernate.annotations.GenericGenerator; 20 ?21 /** 22 ?* @ClassName: Product 23 ?* @Description: TODO 24 ?* @author jed 25 ?* @date 2017年2月26日下午7:08:59 26 ?* 27 ?*/ 28 @Entity 29 @Table(name="t_product") 30 public class Product { 31 ?????32 ????private int id; 33 ????private String name; //名字 34 ????private int price; //价格 35 ????private int stock; //存储 36 ????private String proPic; //图片 37 ????private String description; //描述 38 ????private int hot; //默认0不热卖 ?0:不热卖 ,1：热卖 39 ????private Date hotTime; //热卖时间 40 ????private int specialPrice; ?//特价0不打特价 ?0:不打热价,1：打特价 41 ????private Date specialPriceTime; //特价时间 42 ?????43 ????private ProductBigType bigType; //商品和商品大类是多对一关系 44 ????private ProductSmallType smallType; //商品和商品小类是多对一关系 45 ????private List<OrderProduct> orderProductList = new ArrayList<OrderProduct>(); //商品和订单商品是一对多关系 46 ?????47 ????@Id 48 ????@GeneratedValue(generator="_native") 49 ????@GenericGenerator(name="_native",strategy="native") 50 ????public int getId() { 51 ????????return id; 52 ????} 53 ????public void setId(int id) { 54 ????????this.id = id; 55 ????} 56 ?????57 ????@Column(length=50) 58 ????public String getName() { 59 ????????return name; 60 ????} 61 ????public void setName(String name) { 62 ????????this.name = name; 63 ????} 64 ????public int getPrice() { 65 ????????return price; 66 ????} 67 ????public void setPrice(int price) { 68 ????????this.price = price; 69 ????} 70 ????public int getStock() { 71 ????????return stock; 72 ????} 73 ????public void setStock(int stock) { 74 ????????this.stock = stock; 75 ????} 76 ????public String getProPic() { 77 ????????return proPic; 78 ????} 79 ????public void setProPic(String proPic) { 80 ????????this.proPic = proPic; 81 ????} 82 ????@Column(length=2000) 83 ????public String getDescription() { 84 ????????return description; 85 ????} 86 ????public void setDescription(String description) { 87 ????????this.description = description; 88 ????} 89 ????public int getHot() { 90 ????????return hot; 91 ????} 92 ????public void setHot(int hot) { 93 ????????this.hot = hot; 94 ????} 95 ????public Date getHotTime() { 96 ????????return hotTime; 97 ????} 98 ????public void setHotTime(Date hotTime) { 99 ????????this.hotTime = hotTime;100 ????}101 ????public int getSpecialPrice() {102 ????????return specialPrice;103 ????}104 ????public void setSpecialPrice(int specialPrice) {105 ????????this.specialPrice = specialPrice;106 ????}107 ????public Date getSpecialPriceTime() {108 ????????return specialPriceTime;109 ????}110 ????public void setSpecialPriceTime(Date specialPriceTime) {111 ????????this.specialPriceTime = specialPriceTime;112 ????}113 ????114 ????@ManyToOne115 ????@JoinColumn(name="bigTypeId") //外键关联116 ????public ProductBigType getBigType() {117 ????????return bigType;118 ????}119 ????public void setBigType(ProductBigType bigType) {120 ????????this.bigType = bigType;121 ????}122 ????123 ????@ManyToOne124 ????@JoinColumn(name="smallTypeId") //外键关联125 ????public ProductSmallType getSmallType() {126 ????????return smallType;127 ????}128 ????public void setSmallType(ProductSmallType smallType) {129 ????????this.smallType = smallType;130 ????}131 ????132 ????@OneToMany133 ????@JoinColumn(name="productId")134 ????public List<OrderProduct> getOrderProductList() {135 ????????return orderProductList;136 ????}137 ????public void setOrderProductList(List<OrderProduct> orderProductList) {138 ????????this.orderProductList = orderProductList;139 ????}140 ????141 ????142 143 }

 1 /** 2 ?????* ?3 ?????* @MethodName: list 4 ?????* @Description: 获取商品 5 ?????* @author jed 6 ?????* @date 2017年5月7日下午5:23:23 7 ?????* @param @return ????8 ?????* @return String ???返回类型 9 ?????* @return10 ?????* @throws Exception 11 ?????*12 ?????*/13 ????public String list() throws Exception{14 ????????PageBean pageBean = new PageBean(Integer.parseInt(page), Integer.parseInt(rows));15 ????????List<Product> productList = productService.findProductList(productDetail, pageBean);16 ????????long total = productService.getProductCount(productDetail);17 ????????JsonConfig jsonConfig = new JsonConfig();18 ????????jsonConfig.setExcludes(new String[]{"orderProductList"}); //去除要排除的属性 ??前台不展示19 ????????jsonConfig.registerJsonValueProcessor(java.util.Date.class, new DateJsonValueProcessor("yyyy-MM-dd")); //日期处理20 ????????jsonConfig.registerJsonValueProcessor(ProductBigType.class, new ObjectJsonValueProcessor(new String[]{"id","name"}, ProductBigType.class));//商品大类的id和name21 ????????jsonConfig.registerJsonValueProcessor(ProductSmallType.class, new ObjectJsonValueProcessor(new String[]{"id","name"},ProductSmallType.class )); //商品小类的id和name22 ????????JSONArray rows = JSONArray.fromObject(productList, jsonConfig);23 ????????JSONObject result = new JSONObject();24 ????????result.put("rows", rows);25 ????????result.put("total", total);26 ????????ResponseUtil.write(ServletActionContext.getResponse(), result);27 ????????return null;28 ????}

 1 package com.hik.action; 2 ?3 import java.text.SimpleDateFormat; 4 ?5 import net.sf.json.JsonConfig; 6 import net.sf.json.processors.JsonValueProcessor; 7 ?8 /** 9 ?* json-lib 日期处理类10 ?* @author Administrator11 ?*12 ?*/13 public class DateJsonValueProcessor implements JsonValueProcessor{14 15 ????private String format; ?16 ????17 ????public DateJsonValueProcessor(String format){ ?18 ????????this.format = format; ?19 ????} ?20 ????21 ????public Object processArrayValue(Object value, JsonConfig jsonConfig) {22 ????????// TODO Auto-generated method stub23 ????????return null;24 ????}25 26 ????public Object processObjectValue(String key, Object value, JsonConfig jsonConfig) {27 ????????if(value == null) ?28 ????????{ ?29 ????????????return ""; ?30 ????????} ?31 ????????if(value instanceof java.sql.Timestamp) ?32 ????????{ ?33 ????????????String str = new SimpleDateFormat(format).format((java.sql.Timestamp)value); ?34 ????????????return str; ?35 ????????} ?36 ????????if (value instanceof java.util.Date) ?37 ????????{ ?38 ????????????String str = new SimpleDateFormat(format).format((java.util.Date) value); ?39 ????????????return str; ?40 ????????} ?41 ??????????42 ????????return value.toString(); 43 ????}44 45 }

 1 package com.hik.action; 2 ?3 import java.beans.PropertyDescriptor; 4 import java.lang.reflect.Method; 5 ?6 import net.sf.json.JSONObject; 7 import net.sf.json.JsonConfig; 8 import net.sf.json.processors.JsonValueProcessor; 9 10 /**11 ?* 解决对象级联问题12 ?* @author Administrator13 ?*14 ?*/15 public class ObjectJsonValueProcessor implements JsonValueProcessor{16 17 ????/**18 ?????* 保留的字段19 ?????*/20 ????private String[] properties; ?21 ????22 ????/**23 ?????* 处理类型24 ?????*/25 ????private Class<?> clazz; ?26 ????27 ????/**28 ?????* 构造方法 29 ?????* @param properties30 ?????* @param clazz31 ?????*/32 ????public ObjectJsonValueProcessor(String[] properties,Class<?> clazz){ ?33 ????????this.properties = properties; ?34 ????????this.clazz =clazz; ?35 ????} ?36 ????37 ????public Object processArrayValue(Object arg0, JsonConfig arg1) {38 ????????// TODO Auto-generated method stub39 ????????return null;40 ????}41 42 ????public Object processObjectValue(String key, Object value, JsonConfig jsonConfig) {43 ????????PropertyDescriptor pd = null; ?44 ????????Method method = null; ?45 ????????StringBuffer json = new StringBuffer("{"); ?46 ????????try{ ?47 ????????????for(int i=0;i<properties.length;i++){ ?48 ????????????????pd = new PropertyDescriptor(properties[i], clazz); ?49 ????????????????method = pd.getReadMethod(); ?50 ????????????????String v = String.valueOf(method.invoke(value)); ?51 ????????????????json.append("‘"+properties[i]+"‘:‘"+v+"‘"); ?52 ????????????????json.append(i != properties.length-1?",":""); ?53 ????????????} ?54 ????????????json.append("}"); ?55 ????????}catch (Exception e) { ?56 ????????????e.printStackTrace(); ?57 ????????} ?58 ????????return JSONObject.fromObject(json.toString()); ?59 ????}60 61 }