Question

我想解析idKeys1并从idKeys1获取属性ID（Pds AttributeId）和属性值（值）。我不确定解析它的最佳方法是什么，因为它是PDSAttribute的列表。

List<PdsAttribute> idKeys1 = m_pdssmartclient.release(PersistenceEnum.COMMIT, false);
Iterator<PdsAttribute> i = idKeys1.iterator();
  while (i.hasNext()) {
                    String parse = String.valueOf(i.next());
                    System.out.println(i.next());
                      }

idKeys1的示例输出为： -

[Pds Attribute: 
Pds AttributeId = 20000
value = 0
Attribute Status = 
Status Code = 0
Status = NOT_PROCESSED
Status message = null

, Pds Attribute: 
Pds AttributeId = 20002
value = -1
Attribute Status = 
Status Code = 0
Status = NOT_PROCESSED
Status message = null

, Pds Attribute: 
Pds AttributeId = 20004
value = -9223372036854775808
Attribute Status = 
Status Code = 0
Status = SUCCESS
Status message = null

, Pds Attribute: 
Pds AttributeId = 248
value = 1906e3551370af60d5b48854fffffffe
Attribute Status = 
Status Code = 0
Status = NOT_PROCESSED
Status message = null

, Pds Attribute: 
Pds AttributeId = 330
value = null
Attribute Status = 
Status Code = 0
Status = NOT_PROCESSED
Status message = null

, Pds Attribute: 
Pds AttributeId = 202
value = 1906e1611370af60d5b48854ffffffff
Attribute Status = 
Status Code = 0
Status = SUCCESS
Status message = null

, Pds Attribute: 
Pds AttributeId = 331
value = null
Attribute Status = 
Status Code = 0
Status = NOT_PROCESSED
Status message = null

, Pds Attribute: 
Pds AttributeId = 347
value = 1906e5a11370af60d5b48854fffffffd
Attribute Status = 
Status Code = 0
Status = NOT_PROCESSED
Status message = null

, Pds Attribute: 
Pds AttributeId = 332
value = 4fa813bc.0.1.8.9.5.0.1
Attribute Status = 
Status Code = 0
Status = NOT_PROCESSED
Status message = null

, Pds Attribute: 
Pds AttributeId = 12
value = 1002491107
Attribute Status = 
Status Code = 0
Status = NOT_PROCESSED
Status message = null

, Pds Attribute: 
Pds AttributeId = 333
value = 4fa813bc.0.1.7.8.0.0.1
Attribute Status = 
Status Code = 0
Status = NOT_PROCESSED
Status message = null

]

Answer 1

所以

错了

        while (i.hasNext()) {
            PdsAttribute attr = (PdsAttribute) (i.next());
            String attrId = String.valueOf(attr.getAttributeId);
            String attrValue = String.valueOf(attr.getValue());
        }

当然，假设您在PdsAttribute类中拥有PdsAttributeId和值的适当访问器。如果没有，你应该考虑添加一些来封装它的成员。

Answer 2

如果PdsAttributeId和value是PdsAttribute类中的字段，并且在其字段中定义了setter方法，则会在迭代中进行以下更改

while ( i.hasNext() ) {  
    PdsAttribute pdsAttribute = ( PdsAttribute ) i.next();  
    String pdsAttributeId = String.valueOf( pdsAttribute.getPdsAttributeId() );  
    String pdsAttributeValue = String.valueOf( pdsAttribute.getValue() );  

    // now use these values as required  
} // while

如何在Java中解析对象列表

2 个答案: