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我們有Web應用程序Extjs，Spring3.0，JPA，Hibernate。我有單一的實體工作正常，但昨天我已經添加@manytoone在用戶實體和應用程序停止工作的搜索頁面。 Extjs開始拋出異常。當我嘗試調試時發現@manytoOne關係存在問題。任何人都可以給我提示嗎？Extjs + Spring + JPA + HIbernate
@Controller
public class BusinessCalsController {
@Autowired
private BusinessCalService businessCalService;
public void setBusinessCalService(BusinessCalService businessCalService) {
this.businessCalService = businessCalService;
}
@SuppressWarnings("unchecked")
@RequestMapping(value="/businessCalView.do",method=RequestMethod.GET)
public @ResponseBody Map<String,? extends Object> view(HttpServletRequest request, HttpServletResponse response) throws Exception {
try{
String strStart = request.getParameter("start"); //start index
String strLimit = request.getParameter("limit"); //limit record num
String strSort = request.getParameter("sort"); //desc or asc
String strDir = request.getParameter("dir"); //property for sort
Map businessCal = (Map)businessCalService.getBusinessCalList(strStart, strLimit, strSort, strDir);
Map modelMap = getJSONMap((List<BusinessCal>) businessCal.get("resultSet"));
return modelMap;
} catch (Exception e) {
return getModelMapError("Error retrieving Machine from database.");
}
}
/**
* Generates modelMap to return in the modelAndView
* @param contacts
* @return
*/
private Map<String,Object> getJSONMap(List<BusinessCal> businessCal){
Map<String,Object> modelMap = new HashMap<String,Object>(3);
modelMap.put("total", businessCal.size());
modelMap.put("data", businessCal);
modelMap.put("success", true);
return modelMap;
}
/**
* Generates modelMap to return in the modelAndView in case
* of exception
* @param msg message
* @return
*/
private Map<String,Object> getModelMapError(String msg){
Map<String,Object> modelMap = new HashMap<String,Object>(2);
modelMap.put("message", msg);
modelMap.put("success", false);
return modelMap;
}
}
@Service
public class BusinessCalService {
@Autowired
private BusinessCalDAO businessCalDAO;
private BusinessCalJsonUtil util;
/**
* Get all contacts
* @return
*/
@Transactional(readOnly=true)
public Object getBusinessCalList(String strStart,String strLimit,String strSort, String strDir){
return businessCalDAO.searchBusinessCal(strStart, strLimit, strSort, strDir);
}
/**
* @return the userCalDAO
*/
public BusinessCalDAO getBusinessCalDAO() {
return businessCalDAO;
}
/**
* @param userCalDAO the userCalDAO to set
*/
@Autowired
public void setBusinessCalDAO(BusinessCalDAO businessCalDAO) {
this.businessCalDAO = businessCalDAO;
}
/**
* Spring use - DI
* @param util
*/
@Autowired
public void setJsonUtil(BusinessCalJsonUtil util) {
this.util = util;
}
}
@Repository
public class BusinessCalDAO {
@Autowired
private HibernateTemplate hibernateTemplate;
private boolean flag;
/**
* @return the hibernateTemplate
*/
@SuppressWarnings("unchecked")
public void setHibernateTemplate(HibernateTemplate hibernateTemplate){
this.hibernateTemplate = hibernateTemplate;
}
/**
* Get List of UsersCals from database
* @return list of all contacts
*/
@SuppressWarnings("unchecked")
public Object searchBusinessCal(String strStart,String strLimit,String strSort, String strDir) {
PageHibernate newPage = null;
BusinessCal obj = new BusinessCal();
newPage = new PageHibernate("from BusinessCal", (strStart != null && !strStart.equals("null")) ? Integer.parseInt(strStart) : 0 , (strLimit != null && !strLimit.equals("null")) ? Integer.parseInt(strLimit) : 0 ,obj.getClass());
return hibernateTemplate.execute(newPage);
}
}
@SuppressWarnings("serial")
@Entity
@Table(name="SP_BU_CALS",schema ="TAX_STG")
public class BusinessCal implements Serializable{
private BULookUp objBULookUp;
private Integer intID;
private String strBussUnitId;
/**
* @return the intID
*/
@Id
@Column(name="ID")
@GeneratedValue(strategy=GenerationType.SEQUENCE, generator = "FEED_SEQ")
@SequenceGenerator(name="FEED_SEQ", sequenceName = "TAX_FEED.FEED_SEQ")
public Integer getIntID() {
return intID;
}
/**
* @param intID the intID to set
*/
public void setIntID(Integer intID) {
this.intID = intID;
}
/**
* @return the strBusinessUnitId
*/
@Column(name="BU_ID")
public String getStrBussUnitId() {
return strBussUnitId;
}
/**
* @param strBusinessUnitId the strBusinessUnitId to set
*/
public void setStrBussUnitId(String strBussUnitId) {
this.strBussUnitId = strBussUnitId;
}
/**
* @return the objBULookUp
*/
@ManyToOne
@JoinColumn(name = "BU_ID", insertable = false, updatable = false)
public BULookUp getObjBULookUp() {
return objBULookUp;
}
/**
* @param objBULookUp the objBULookUp to set
*/
public void setObjBULookUp(BULookUp objBULookUp) {
this.objBULookUp = objBULookUp;
}
}
問題開始arice時，我已經在BusinessCal模型中添加BULookUp objBULookUp。 讓我添加BULookUp的代碼以及extjs文件的代碼。
@SuppressWarnings("serial")
@Entity
@Table(name="SP_BU_LKUP",schema ="TAX_STG")
public class BULookUp implements Serializable{
private String strBusinessUnitID;
private String strBusinessUnitDescription;
private String strCBDCode;
private Integer intActive;
/**
* @return the strBusinessUnitID
*/
@Id
@Column(name="BU_ID")
public String getStrBusinessUnitID() {
return strBusinessUnitID;
}
/**
* @param strBusinessUnitID the strBusinessUnitID to set
*/
public void setStrBusinessUnitID(String strBusinessUnitID) {
this.strBusinessUnitID = strBusinessUnitID;
}
/**
* @return the strBusinessUnitDescription
*/
@Column(name="BU_DESCR")
public String getStrBusinessUnitDescription() {
return strBusinessUnitDescription;
}
/**
* @param strBusinessUnitDescription the strBusinessUnitDescription to set
*/
public void setStrBusinessUnitDescription(String strBusinessUnitDescription) {
this.strBusinessUnitDescription = strBusinessUnitDescription;
}
/**
* @return the strCBDCode
*/
@Column(name="CBD")
public String getStrCBDCode() {
return strCBDCode;
}
/**
* @param strCBDCode the strCBDCode to set
*/
public void setStrCBDCode(String strCBDCode) {
this.strCBDCode = strCBDCode;
}
/**
* @return the intActive
*/
@Column(name="ACTIVE")
public Integer getIntActive() {
return intActive;
}
/**
* @param intActive the intActive to set
*/
public void setIntActive(Integer intActive) {
this.intActive = intActive;
}
}
請看以下代碼ExtJS的
app = function() {
var createForm;
var updateForm;
var ds;
var dataGrid;
var menu;
var updateMenuItem;
var createMenuItem;
var readMenuItem;
var deleteMenuItem;
var tb;
var sm;
var userRecord;
var reader;
var writer;
var proxy;
var pagetbUsers;
var getContext = function() {
var base = document.getElementsByTagName('base')[0];
if (base && base.href && (base.href.length > 0)) {
base = base.href;
} else {
base = document.URL;
}
return base.substr(0, base.indexOf("/", base.indexOf("/", base.indexOf("//") + 2) + 1));
};
var onRowClick = function(SelectionModel,rowIndex,record) {
onUpdateClick()
}
return {
init:function() {
businessCalRecord = Ext.data.Record.create([
{name: 'intID', type: 'int'},
{name: 'strBussUnitId', type: 'string'},
{name: 'intCalCount', type: 'int'},
{name: 'strCalType',type: 'string'},
{name: 'strCalDescription', type: 'string'},
{name: 'strCountType', type: 'string'},
{name: 'strCalStart', type: 'string'},
{name: 'strCalEnd', type: 'string'},
{name: 'strCreatedBy', type: 'string'},
{name: 'tmpCreatedDate', type: 'date'},
{name: 'strActive', type: 'string'},
{name: 'tmpInActiveDate', type: 'string'},
{name: 'strCalID', type: 'string'},
{name: 'objBULookUp.strBusinessUnitID', type: 'string'}
]);
// The new DataWriter component.
writer = new Ext.data.JsonWriter({
encode: true,
writeAllFields: true
});
// The new DataReader component.
reader = new Ext.data.JsonReader({
totalProperty: 'total',
successProperty: 'success',
idProperty: 'intID',
root: 'data',
messageProperty: 'message' // <-- New "messageProperty" meta-data
},
businessCalRecord);
proxy = new Ext.data.HttpProxy(new Ext.data.Connection({
api: {read: {url:'businessCalView.do', method: 'GET'}},
autoAbort: true
}));
proxy.addListener('exception', function(proxy, options, response, error, res) {
alert(error);
alert("proxy.addListener");
Ext.Msg.show({
title: 'ERROR',
msg: res.message,
icon: Ext.MessageBox.ERROR,
buttons: Ext.Msg.OK
});
});
proxy.on({
"loadexception": function(proxy, options, response, error) {
alert(response.responseText);
alert("proxy.on");
alert(response.status);
alert(response.message);
}
});
// Typical Store collecting the Proxy, Reader and Writer together.
ds = new Ext.data.Store({
proxy: proxy,
reader: reader,
writer: writer, // <-- plug a DataWriter into the store just as you would a Reader
autoSave: false // <-- false would delay executing create, update, destroy requests until specifically told to do so with some [save] buton.
});
//read the data from simple array
//ds.load();
ds.load({ params: { start: 0, limit: 5} });
var cm = new Ext.grid.ColumnModel([
{header: "id", dataIndex: 'intID',hidden: true},
{header: "Bussiness Unit Id",dataIndex: 'objBULookUp.strBusinessUnitDescription',sortable: true},
{header: "Cal Count", width:80, dataIndex: 'intCalCount', sortable: true},
{header: "Cal Type", width: 100, dataIndex: 'strCalType', sortable: true},
{header: "Cal Description", width: 180, dataIndex: 'strCalDescription', sortable: true},
{header: "Count Type", width: 100, dataIndex: 'strCountType', sortable: true},
{header: "Cal Start", width: 100, dataIndex: 'strCalStart', sortable: true},
{header: "Cal End", width: 100, dataIndex: 'strCalEnd', sortable: true},
{header: "Cal ID", width: 100, dataIndex: 'strCalID', sortable: true}
]);
sm = new Ext.grid.RowSelectionModel({singleSelect:'true'});
sm.addListener('rowselect',onRowClick,this);
var PagingBar = new Ext.PagingToolbar({
pageSize: 5,
store: ds,
displayInfo: true,
displayMsg: 'Displaying topics {0} - {1} of {2}',
emptyMsg: 'No insurers to display'
});
dataGrid = new Ext.grid.GridPanel({applyTo:'readPanel', frame: true,
ds:ds,
cm:cm,
sm:sm,
bbar: PagingBar,
title:'Search Page of Business Cal',
width: 910,
height: 195
});
};
}();
但是，當我刪除@ManyToOne相同的代碼工作正常。
欣賞你的努力，看看我的問題。
變量strBussUnitId是BusinessCal模型中屬於BULookUp模型的列。 BULookUp模型僅僅是主數據表，用於存儲通過strBussUnitId使用該主表數據的BusinessCal。
Noow在我們使用extjs的前端我無法顯示strBussUnitId，這是我需要爲strBussUnitId設置相應的strBusinessUnitDescription的數字。爲此，我使用BULookUp模型在BusinessCal模型中創建了@manytoOne。
當我在BusinessCal模型中添加@manytoOne時出現問題。
發佈您的代碼和堆棧跟蹤或您遇到的任何錯誤。 – Rohit
在任何人能夠幫助你之前，你需要提供更多的細節。向我們展示您的實體類（使用JPA註釋）並啓動異常堆棧跟蹤。 – ChssPly76