你好这是相对于后下 -
SmartGWT的技术网格休息的DataSource未填充
我面临的一个问题,而试图建立与SmartGWT的和Spring3的应用程序。 用杰克逊返回对象转换为JSON。
误差JSON响应(在所述柱的端部完全堆栈跟踪)从弹簧控制器返回到客户端侧:
16:52:27.094 [错误] [utilapp] 16:52:27.092:TMR1:WARN:RestDataSource:isc_ItemListGrid_1_0:RestDataSouce transformResponse():JSON响应文本不显示是在标准响应格式。 com.smartgwt.client.core.JsObject $ SGWT_WARN:16:52:27.092:TMR1:警告:RestDataSource:isc_ItemListGrid_1_0:RestDataSouce transformResponse():JSON响应文本不会出现在标准的响应格式。
只是想知道是否有人遇到过这样的错误之前或在什么可能是背后的原因是任何提示将是非常有用的。
在击中直接从浏览器对应的GET方法的url JSON响应有效载荷 - { “状态”:0, “数据”:NULL, “错误”:{}, “endRow”:0 “STARTROW”:0 “totalRows”: - 1}
所有字段有默认值,但控制器内设置这些。
定义DSResponse POJO带来与链接什么描述同步JSON响应- http://www.smartclient.com/smartgwt/javadoc/com/smartgwt/client/data/RestDataSource.html
web.xml中:调度servlet的条目
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
弹簧servlet.xml中 - (注释基于所以没有控制器豆只是映射到JacksonJsonView)
<context:component-scan base-package="com.khush.util.server.rest" />
<context:component-scan base-package="com.khush.util.server.spring" />
<context:annotation-config/>
<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="mediaTypes">
<map>
<entry key="html" value="text/html"/>
<entry key="json" value="application/json"/>
</map>
</property>
<property name="viewResolvers">
<list>
<bean class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</list>
</property>
<property name="defaultViews">
<list>
<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">
<property name="prefixJson" value="true"/>
</bean>
</list>
</property>
</bean>
在服务器副作用春季控制器
@Controller
@RequestMapping("/service*")
public class RPCListService {
@RequestMapping(value="/fetch", method=RequestMethod.POST)
public @ResponseBody DSResponse fetch(@RequestBody String json){
DSResponse dsResponse = new DSResponse();
List<Account> accounts = new ArrayList<Account>();
Account account;
for(int i = 0 ; i < 500 ; i++){
account = new Account();
account.setAccountId(i * 100L);
account.setAccountName("i " + "accountName");
account.setAccountNumber("i " + "accountNumber");
accounts.add(account);
}
dsResponse.setDate(accounts.toArray());
return response;
}
@RequestMapping(value="/get", method=RequestMethod.GET)
@ResponseBody public Object get(@RequestBody String json){
DSResponse dsResponse = new DSResponse();
List<Account> accounts = new ArrayList<Account>();
Account account;
for(int i = 0 ; i < 500 ; i++){
account = new Account();
account.setAccountId(i * 100L);
account.setAccountName("i " + "accountName");
account.setAccountNumber("i " + "accountNumber");
accounts.add(account);
}
dsResponse.setDate(accounts.toArray());
return dsResponse;
}
}
在客户端RestDataSource定义 -
public class AccountDataSource extends SpringJSONDataSource {
public AccountDataSource(List<DataSourceField> fields) {
super(fields);
setPrettyPrintJSON(true);
}
@Override
protected OperationBinding getFetch() {
OperationBinding fetch = new OperationBinding();
fetch.setOperationType(DSOperationType.FETCH);
fetch.setDataProtocol(DSProtocol.POSTMESSAGE);
DSRequest fetchProps = new DSRequest();
fetchProps.setHttpMethod(httpMethod);
fetch.setRequestProperties(fetchProps);
return fetch;
}
@Override
protected OperationBinding getRemove() {
// TODO Auto-generated method stub
return null;
}
@Override
protected OperationBinding getAdd() {
// TODO Auto-generated method stub
return null;
}
@Override
protected OperationBinding getUpdate() {
// TODO Auto-generated method stub
return null;
}
@Override
public String getUpdateDataURL() {
// TODO Auto-generated method stub
return null;
}
@Override
public String getRemoveDataURL() {
// TODO Auto-generated method stub
return null;
}
@Override
public String getAddDataURL() {
// TODO Auto-generated method stub
return null;
}
@Override
public String getFetchDataURL() {
return "/rest/service/fetch";
}
}
public abstract class SpringJSONDataSource extends RestDataSource {
protected final String httpMethod;
public SpringJSONDataSource(List<DataSourceField> fields){
this(fields, "POST");
}
public SpringJSONDataSource(List<DataSourceField> fields, String httpMethod) {
this.httpMethod = httpMethod;
setDataFormat(DSDataFormat.JSON);
addDataSourceFields(fields);
setOperationBindings(getFetch());
addURLs();
}
private void addURLs() {
if(getUpdateDataURL() != null)
setUpdateDataURL(getUpdateDataURL());
if(getRemoveDataURL() != null)
setRemoveDataURL(getRemoveDataURL());
if(getAddDataURL() != null)
setAddDataURL(getAddDataURL());
if(getFetchDataURL() != null)
setFetchDataURL(getFetchDataURL());
}
private void addDataSourceFields(List<DataSourceField> fields) {
for (DataSourceField dataSourceField : fields) {
addField(dataSourceField);
}
}
protected abstract OperationBinding getFetch();
protected abstract OperationBinding getRemove();
protected abstract OperationBinding getAdd();
protected abstract OperationBinding getUpdate();
public abstract String getUpdateDataURL();
public abstract String getRemoveDataURL();
public abstract String getAddDataURL();
public abstract String getFetchDataURL();
}
帐户和DSResponse对象 -
public class Account implements Serializable {
private static final long serialVersionUID = 1L;
private Long accountId;
private String accountName;
private String accountNumber;
public Account(){
}
public Account(Long accountId){
setAccountId(accountId);
}
public Long getAccountId() {
return accountId;
}
public void setAccountId(Long accountId) {
this.accountId = accountId;
}
public String getAccountName() {
return accountName;
}
public void setAccountName(String accountName) {
this.accountName = accountName;
}
public String getAccountNumber() {
return accountNumber;
}
public void setAccountNumber(String accountNumber) {
this.accountNumber = accountNumber;
}
@Override
public String toString(){
StringBuilder sb = new StringBuilder();
sb.append("Account Id: ").append(getAccountId()).append(", ");
sb.append("Account Name: ").append(getAccountName()).append(", ");
sb.append("Account Number: ").append(getAccountNumber()).append(", ");
return sb.toString();
}
@Override
public int hashCode(){
final int prime = 31;
int result = 1;
result = prime * result + ((accountName == null) ? 0 : accountName.hashCode());
return result;
}
@Override
public boolean equals(Object obj){
if(this == obj)
return true;
if(obj == null)
return false;
if(!(obj instanceof Account))
return false;
Account other = (Account)obj;
if(accountId == null){
if(other.accountId != null)
return false;
} else if(! accountId.equals(other.accountId))
return false;
if(accountName == null){
if(other.getAccountName() != null)
return false;
}else if(! accountName.equals(other.accountName))
return false;
if(accountNumber == null){
if(other.accountNumber != null)
return false;
}else if(! accountNumber.equals(other.accountNumber))
return false;
return true;
}
}
public class DSResponse implements Serializable{
private static final long serialVersionUID = -4937262101507779477L;
public static int STATUS_FAILURE = -1;
public static int STATUS_LOGIN_INCORRECT = -5;
public static int STATUS_LOGIN_REQUIRED = -7;
public static int STATUS_LOGIN_SUCCESS = -8;
public static int STATUS_MAX_LOGIN_ATTEMPTS_EXCEEDED = -6;
public static int STATUS_SERVER_TIMEOUT = -100;
public static int STATUS_SUCCESS = 0;
public static int STATUS_TRANSPORT_ERROR = -90;
public static int STATUS_VALIDATION_ERROR = -4;
private int status;
private Integer startRow;
private Integer endRow;
private Integer totalRows;
private Object[] data;
private Map errors;
public int getStatus()
{
return status;
}
public void setStatus(int status)
{
this.status = status;
}
public Integer getStartRow()
{
return startRow;
}
public void setStartRow(Integer startRow)
{
this.startRow = startRow;
}
public Integer getEndRow()
{
return endRow;
}
public void setEndRow(Integer endRow)
{
this.endRow = endRow;
}
public Integer getTotalRows()
{
return totalRows;
}
public void setTotalRows(Integer totalRows)
{
this.totalRows = totalRows;
}
public Object[] getData()
{
return data;
}
public void setData(Object[] data)
{
this.data = data;
}
public Map getErrors()
{
return errors;
}
public void setErrors(Map errors)
{
this.errors = errors;
}
public DSResponse()
{
status = STATUS_SUCCESS;
errors = new HashMap();
startRow = 0;
endRow = 0;
totalRows = -2;
}
public DSResponse(int status)
{
this.status = status;
errors = new HashMap();
startRow = 0;
endRow = 0;
totalRows = -1;
}
}
完整的堆栈跟踪:
09:24:58.896 [错误] [utilapp] 09:24:58.894:TMR0:WARN:RestDataSource:isc_AccountDataSource_0:RestDataSouce transformResponse():JSON响应文本不显示是在标准响应格式。 com.smartgwt.client.core.JsObject $ SGWT_WARN:09:24:58.894:TMR0:警告:RestDataSource:isc_AccountDataSource_0:RestDataSouce transformResponse():JSON响应文本不会出现在标准的响应格式。 在sun.reflect.NativeConstructorAccessorImpl.newInstance0(本机方法)在sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)在sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)在java.lang.reflect.Constructor中.newInstance(Constructor.java:513)在com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:105)在com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71 )在com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)在com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:338)在com.google.gwt。 dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:219)在com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)在com.google.gwt.dev.shell.ModuleSpace.invokeNative( ModuleSpace.java:571)在com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(M oduleSpace.java:299)在com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:107)在com.smartgwt.client.data.DataSource.transformResponse(DataSource.java)在sun.reflect.NativeMethodAccessorImpl .invoke0(本机方法)在sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)在sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)在java.lang.reflect.Method.invoke(Method.java :597)在com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)在com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)在com.google。 gwt.dev.shell.OophmSessionHandler.invoke在com.google.gwt.dev.shell.BrowserChannelServer(OophmSessionHandler.java:172)在com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:338)。 invokeJavascript(BrowserChannelServer.java:219)在com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)在com.g oogle.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:571)在com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:279)在com.google.gwt.dev.shell。 JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)在com.google.gwt.core.client.impl.Impl.apply(Impl.java)在com.google.gwt.core.client.impl.Impl.entry0(默认地将Impl。的java:242)在sun.reflect.GeneratedMethodAccessor50.invoke(未知来源)在sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)在java.lang.reflect.Method.invoke(Method.java:597)在玉米.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)在com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)在com.google.gwt.dev.shell .OophmSessionHandler.invoke(OophmSessionHandler.java:172)在com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:293)在com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java :547)在com.google.gw t.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)在java.lang.Thread.run(Thread.java:619)
谢谢!