解决： json 字符串转Object? 时出现 java.lang.ClassCastException: net.sf.ezmorph.bean.MorphDynaBean cannot be cast to cashway.test.JsonString 异常的问题。

解决方法：设置JsonConfig 类。

?

解决方法：public void strToJson(String str){
????
??JSONArray parentJson = JSONArray.fromObject(str);
??//设置类型
??JsonConfig jsonConfig = new JsonConfig();
??jsonConfig.setRootClass(JsonString.class);?? //JsonString.class?
??????? Map<String, Class> classMap = new HashMap<String, Class>();?
??????? classMap.put("topic", Sub.class);? //Sub.class 设置jonString类中包含的类
??????? jsonConfig.setClassMap(classMap);
??
??List<JsonString> persons = (List<JsonString>)JSONArray.toCollection(parentJson, jsonConfig);
??
??

??//遍历列表
??for(JsonString p:persons){
???System.out.println("id"+p.getId() +" name:"+p.getName() );
???List<Sub> li = p.getTopic();
???int len = li.size();
???if(li != null && len > 0){
????for(int i=0;i<len;i++){
?????Sub sub = p.getTopic().get(i);
?????System.out.println("type:"+sub.getType() +" subType:"+sub.getSubtype());
????}
???}
??}
??
?}

?

2.pojo

?

package cashway.test;

public class Sub {
?
?private String type;
?private String subtype;
?
?public String getType() {
??return type;
?}
?public void setType(String type) {
??this.type = type;
?}
?public String getSubtype() {
??return subtype;
?}
?public void setSubtype(String subtype) {
??this.subtype = subtype;
?}

}

?

?

package cashway.test;

import java.util.ArrayList;
import java.util.List;

public class JsonString {
?
?public static final String? STR_JSON= "["
??????? +"{"
??????????? +"\"id\": \"1\","
??????????? +"\"name\": \"兰州拉面馆\","
??????????? +"\"country\": \"120112\","
??????????? +"\"address\": \"津南区底商B座6号\","
??????????? +"\"ifvalid\": \"True\","
??????????? +"\"updatetime\": \"2013-9-11 15:30:50\","
??????????? +"\"attribute\": \"450\","
??????????? +"\"phone\": \"123456789\","
??????????? +"\"topic\": ["
??????????? +"{"
??????????? +" \"type\": \"fx\","
??????????? +"\"subtype\": \"4\""
??????????? +"}"
??????????? +"]"
??????????? +"},"
??????????? +"{"
??????????? +"\"id\": \"222222\","
??????????? +"\"name\": \"中学食堂\","
??????????? +"\"country\": \"120\","
??????????? +"\"address\": \"大丰堆镇\","
??????????? +" \"ifvalid\": \"False\","
??????????? +"\"updatetime\": \"2015-9-11 15:31:35\","
??????????? +"\"attribute\": \"30\","
??????????? +"\"phone\": \"233344555\""
??????????? +"}"
??????????? +"]";
?
?private String id;
?private String name;
?private String country;
?private String address;
?private String ifvalid;
?private String updatetime;
?private String attribute;
?private String phone;
?private List<Sub> topic = new ArrayList<Sub>();
?
?public String getId() {
??return id;
?}
?public void setId(String id) {
??this.id = id;
?}
?public String getName() {
??return name;
?}
?public void setName(String name) {
??this.name = name;
?}
?public String getCountry() {
??return country;
?}
?public void setCountry(String country) {
??this.country = country;
?}
?public String getAddress() {
??return address;
?}
?public void setAddress(String address) {
??this.address = address;
?}
?public String getIfvalid() {
??return ifvalid;
?}
?public void setIfvalid(String ifvalid) {
??this.ifvalid = ifvalid;
?}
?public String getUpdatetime() {
??r