Java Json/xml 序列化和還原序列化工具：JsonTools 和 simpleframework【附帶執行個體】__Java

Json序列化：將java bean轉換成Json字串；Json還原序列化：將Json字串轉換成java bean。

xml序列化：將java bean轉換成xml檔案；xml還原序列化：將xml檔案轉換成java bean。

1. xml 序列化還原序列化工具：simple framework  功能非常強大，使用起來非常簡單。在這裡可以下載到它：http://sourceforge.net/projects/simple/

使用方法：首先根據xml檔案建好java bean ，可以是非常複雜的java bean。  對應的xml檔案和java bean 見文章尾部。

匯入：

import org.simpleframework.xml.Serializer;import org.simpleframework.xml.core.Persister;

直接使用：

File file = new File("c://mystd.xml");  Serializer serializer = new Persister();//還原序列化  Bean rule=serializer.read(Bean.class, file);//序列化serializer.write(rule, file);

下面主要介紹json的序列化還原序列化 工具

2.Json 工具 Json序列化還原序列化工具：JsonTools JsonTools是一個不錯的JSON序列化和還原序列化功能包，在這裡可以下載到它： http://sourceforge.net/projects/jontools/。 使用介紹：

 //序列化 JSONValue jsonValue = JSONMapper.toJSON( bean);    String jsonStr = jsonValue.render(true);   //是否格式化 System.out.println(jsonStr);   //還原序列化  JSONParser parser = new JSONParser(new StringReader(jsonStr));    L2Rule bean = (L2Rule) JSONMapper.toJava(parser.nextValue(), L2Rule.class);  

  原始xml檔案：

<L2Rule><Sheet Type="BS">  <Table>   <Row ItemName="Total assets" USID="USGB123450" Level="0"/>   <Row ItemName="Total current assets" USID="USGB123451"  Level="1"/>   <Row ItemName="Cash and cash equivalents" USID="USGB123452" Level="2" />   <Row ItemName="Accounts receivable, net of allowance for bad debts of " USID="USGB123453" Level="2" />   <Row ItemName="Current assets" USID="USGB123454" Level="2" />     </Table> </Sheet></L2Rule>

解析後的json： {"sheet":[{"tables":{"rows":[{"itemName":"Total assets","level":"0","usid":"USGB123450"},{"itemName":"Total current assets","level":"1","usid":"USGB123451"},{"itemName":"Cash and cash equivalents","level":"2","usid":"USGB123452"},{"itemName":"Accounts receivable, net of allowance for bad debts of ","level":"2","usid":"USGB123453"},{"itemName":"Current assets","level":"2","usid":"USGB123454"}]},"type":"BS"}]}
 加格式： {
   "sheet" :
      [
         {
            "tables" :
               {
                  "rows" :
                     [
                        {
                           "itemName" : "Total assets",
                           "level" : "0",
                           "usid" : "USGB123450"
                        },
                        {
                           "itemName" : "Total current assets",
                           "level" : "1",
                           "usid" : "USGB123451"
                        },
                        {
                           "itemName" : "Cash and cash equivalents",
                           "level" : "2",
                           "usid" : "USGB123452"
                        },
                        {
                           "itemName" : "Accounts receivable, net of allowance for bad debts of ",
                           "level" : "2",
                           "usid" : "USGB123453"
                        },
                        {
                           "itemName" : "Current assets",
                           "level" : "2",
                           "usid" : "USGB123454"
                        }
                     ]
               },
            "type" : "BS"
         }
      ]
}
對應的bean：
L2Rule.java

import org.simpleframework.xml.ElementList;import org.simpleframework.xml.Root;@Root(name="L2Rule")public class L2Rule{@ElementList(name="Sheet",required=false,inline=true)public List<Sheet> sheet = new LinkedList<Sheet>();public List<Sheet> getSheet()    {    return sheet;    }public void setSheet(List<Sheet> sheet)    {    this.sheet = sheet;    }}

Sheet.java

import org.simpleframework.xml.Attribute;import org.simpleframework.xml.Element;import org.simpleframework.xml.Root;@Root(name="Sheet")public class Sheet{@Element(name="Table",required=false)public Table tables = new Table();@Attribute(name="Type",required=false)public String type;public Table getTables()    {    return tables;    }public void setTables(Table tables)    {    this.tables = tables;    }public String getType()    {    return type;    }public void setType(String type)    {    this.type = type;    }}

Table.java

import java.util.LinkedList;import java.util.List;import org.simpleframework.xml.ElementList;import org.simpleframework.xml.Root;@Root(name="Table")public class Table{@ElementList(name="Row",required=false,inline=true)public List<Row> rows = new LinkedList<Row>();public List<Row> getRows()    {    return rows;    }public void setRows(List<Row> rows)    {    this.rows = rows;    }}

Row.java

import org.simpleframework.xml.Attribute;import org.simpleframework.xml.Root;@Root(name="Row")public class Row{@Attribute(name="ItemName",required=true)public String itemName;@Attribute(name="USID",required=true)public String usid;@Attribute(name="Level",required=true)public String level;public String getItemName()    {    return itemName;    }public void setItemName(String itemName)    {    this.itemName = itemName;    }public String getUsid()    {    return usid;    }public void setUsid(String usid)    {    this.usid = usid;    }public String getLevel()    {    return level;    }public void setLevel(String level)    {    this.level = level;    }}