Jasper Report在表格中显示JSON数组

我正在尝试使用由JAVA函数传递的JSONDatasource创建JasperReport。Jasper Report在表格中显示JSON数组

这里是我的JSON，我送碧玉

{ 
    "Person": { 
    "FirstName": "John", 
    "LastName": "Smith", 
    "Contacts": [ 
     { 
      "Type": "Cell", 
      "Number": "555-555-5555" 
     }, 
     { 
      "Type": "Home", 
      "Number": "666-666-6666" 
     } 
    ] 
    } 
}

我想在一个表中显示的电话号码。我可以很好地显示其他字段。但不知道如何显示表格。

这里是我如何定义我的碧玉领域

<field name="FirstName" class="java.lang.String"> 
     <property name="net.sf.jasperreports.json.field.expression" value="Person.FirstName"/> 
    </field> 
    <field name="LastName" class="java.lang.String"> 
     <<property name="net.sf.jasperreports.json.field.expression" value="Person.LastName"/> 
    </field> 
    <field name="Contacts" class="java.lang.String"> 
     <property name="net.sf.jasperreports.json.field.expression" value="Person.Contacts"/> 
</field>

来源

2017-03-15 Alex Clark

随着JSON语言，您可以访问联系人嵌套数组只能通过subDataset的方式，您可以使用它填充表格组件。这里是一个完整的示例（我已经删除了生成的样式，以保持样本紧凑）：

<?xml version="1.0" encoding="UTF-8"?> 
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="Report" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="81afe112-ee1b-4443-8d1c-cb6d9ab95dd8"> 
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="stackoverflow/JSON_array_table/DataAdapter.xml"/> 
    <subDataset name="ContactsSubdataset" uuid="4563e834-a9e5-43b5-9f0a-824948c73c73"> 
     <field name="Type" class="java.lang.String"> 
      <property name="net.sf.jasperreports.json.field.expression" value="Type"/> 
     </field> 
     <field name="Number" class="java.lang.String"> 
      <property name="net.sf.jasperreports.json.field.expression" value="Number"/> 
     </field> 
    </subDataset> 
    <queryString language="json"> 
     <![CDATA[]]> 
    </queryString> 
    <field name="FirstName" class="java.lang.String"> 
     <property name="net.sf.jasperreports.json.field.expression" value="Person.FirstName"/> 
    </field> 
    <field name="LastName" class="java.lang.String"> 
     <property name="net.sf.jasperreports.json.field.expression" value="Person.LastName"/> 
    </field> 
    <detail> 
     <band height="300" splitType="Stretch"> 
      <staticText> 
       <reportElement x="0" y="0" width="80" height="30" uuid="d59811d6-a4e9-4871-a64b-f332d049e551"/> 
       <text><![CDATA[First Name:]]></text> 
      </staticText> 
      <staticText> 
       <reportElement x="0" y="30" width="80" height="30" uuid="ef25edff-1c33-4ec4-8dd1-21766039e6e3"/> 
       <text><![CDATA[Last Name:]]></text> 
      </staticText> 
      <staticText> 
       <reportElement x="0" y="60" width="80" height="30" uuid="e74bfa48-5040-4655-b419-f4f8e9f7e871"/> 
       <text><![CDATA[Contacts:]]></text> 
      </staticText> 
      <textField> 
       <reportElement x="80" y="0" width="200" height="30" uuid="49d1558c-396f-4864-b71f-41b6c7d677c2"/> 
       <textFieldExpression><![CDATA[$F{FirstName}]]></textFieldExpression> 
      </textField> 
      <textField> 
       <reportElement x="80" y="30" width="200" height="30" uuid="8ddaca45-a124-4c67-b2a8-50f7188097f9"/> 
       <textFieldExpression><![CDATA[$F{LastName}]]></textFieldExpression> 
      </textField> 
      <componentElement> 
       <reportElement x="80" y="60" width="200" height="60" uuid="105c3994-b8a8-4085-81ef-4a0e55efc7c6"/> 
       <jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd"> 
        <datasetRun subDataset="ContactsSubdataset" uuid="5459bdfb-6835-4007-8e56-566716c8c29c"> 
         <dataSourceExpression><![CDATA[((net.sf.jasperreports.engine.data.JsonDataSource)$P{REPORT_DATA_SOURCE}).subDataSource("Person.Contacts")]]></dataSourceExpression> 
        </datasetRun> 
        <jr:column width="100" uuid="b3d4c078-f65a-4213-9644-83b85b425703"> 
         <jr:columnHeader height="30"> 
          <staticText> 
           <reportElement x="0" y="0" width="100" height="30" uuid="4b972b67-2f1a-4843-857e-c735dfc59c82"/> 
           <text><![CDATA[Type]]></text> 
          </staticText> 
         </jr:columnHeader> 
         <jr:detailCell height="30"> 
          <textField> 
           <reportElement x="0" y="0" width="100" height="30" uuid="e618a748-3273-476d-95c5-4d232260bf0a"/> 
           <textFieldExpression><![CDATA[$F{Type}]]></textFieldExpression> 
          </textField> 
         </jr:detailCell> 
        </jr:column> 
        <jr:column width="100" uuid="5b01cf7c-71bc-474a-9858-ef58479efcdc"> 
         <jr:columnHeader height="30"> 
          <staticText> 
           <reportElement x="0" y="0" width="100" height="30" uuid="394f2626-8c49-491d-a09c-ef7f90132741"/> 
           <text><![CDATA[Number]]></text> 
          </staticText> 
         </jr:columnHeader> 
         <jr:detailCell height="30"> 
          <textField> 
           <reportElement x="0" y="0" width="100" height="30" uuid="40ddb342-5be4-43bf-9fb2-a1fda76f53af"/> 
           <textFieldExpression><![CDATA[$F{Number}]]></textFieldExpression> 
          </textField> 
         </jr:detailCell> 
        </jr:column> 
       </jr:table> 
      </componentElement> 
     </band> 
    </detail> 
</jasperReport>

来源

2017-03-16 09:00:36 Narcis

这工作完美。非常感谢。 –

这可能是因为联系人数据是一个JSON阵列

JSONObject jsonObject = new JSONObject(jsonString); 
JSONArray contactsArray = jsonObject.getJSONArray("contacts"); 
JSONObject number = contactsArray.getJSONObject(1); 
String numbers = number.getString("number");

来源

2017-03-15 22:47:43 Eclipse

Jasper Report在表格中显示JSON数组

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