GWT RPC警告檢查所有亞型

Question

我有一個GWT aplication，編譯時出現錯誤：

Scanning for additional dependencies: file:/D:/projects/healthplanel_trunk/clinics-gwt-client/src/com/clinics/gwt/shared/UserServiceAsync.java Computing all possible rebind results for 'com.clinics.gwt.shared.UserService' Rebinding com.clinics.gwt.shared.UserService Invoking generator com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator Generating client proxy for remote service interface 'com.clinics.gwt.shared.UserService' Analyzing 'com.clinics.gwt.shared.UserService' for serializable types Analyzing methods: public abstract com.clinics.gwt.shared.query.GQueryResult listAdmins(com.clinics.gwt.shared.query.GQueryParams queryParams) Parameter: com.clinics.gwt.shared.query.GQueryParams queryParams com.clinics.gwt.shared.query.GQueryParams Verifying instantiability com.clinics.gwt.shared.query.GQueryParams Analyzing the fields of type 'com.clinics.gwt.shared.query.GQueryParams' that qualify for serialization private java.util.List> filters java.util.List> Verifying instantiability java.util.Vector> Checking parameters of 'java.util.Vector>' Checking type argument 0 of type 'java.util.Vector' because it is directly exposed in this type or in one of its subtypes com.clinics.gwt.shared.query.GFilterBy Verifying instantiability com.clinics.gwt.shared.query.GFilterBy Checking parameters of 'com.clinics.gwt.shared.query.GFilterBy' Checking type argument 0 of type 'com.clinics.gwt.shared.query.GFilterBy' because it is directly exposed in this type or in one of its subtypes java.io.Serializable Verifying instantiability java.util.HashMap [WARN] Checking all subtypes of Object which qualify for serialization

我的代碼是：

public class GQueryParams implements IsSerializable { 
private static final long serialVersionUID = 1L; 
private int offset = 0; 
private int maxCount = -1; // -1 means all 
private ArrayList<GOrderBy> orders = new ArrayList<GOrderBy>(); 
private ArrayList<NoSqlOrderBy> noSqlOrders = new ArrayList<NoSqlOrderBy>(); 
private ArrayList<GFilterBy<?>> filters = new ArrayList<GFilterBy<?>>(); 

和：

public class GFilterBy<T extends Serializable> implements Serializable { 
private static final long serialVersionUID = 1L; 
private String id; 
private GFilterOperation operation; 
private T value; 

什麼錯了，你能幫我一下嗎？

Answer 1

GFilterBy<?>基本上接受一切（一切實現Serializable），所以，發電機具有掃描每適用類整類路徑，併爲他們每個人的適當SER /反序列化代碼。

這通常不是你想要的，因此警告。

經驗法則是始終是儘可能具體在發送過來與GWT-RPC的線類型;和?顯然違反了這個規則。