首先我在创建数据库方面遇到了麻烦，然后我想把我收到的巨大的json数据（我通过GsonBuilder将json转换为java模型，我看到我的实体[]列表中的所有数据，这些数据来自ReceivedEntityModel类）到数据库，但我在第一步失败。从不创建我的列，所以在插入后有0行数:(，我读了关于这个主题的所有答案，他们根本没有帮助我。我＆＃39; m卡住了。任何人都可以帮忙吗？
public void onCreate(SQLiteDatabase db)
{
String CREATE_M_ENTITY_TABLE = "CREATE TABLE " + TABLE_2_NAME + " ("
+ rId + " INTEGER PRIMARY KEY, "
+ ParentId + " INTEGER, "
+ Code+ " INTEGER, "
+ Label + " TEXT, "
+ LabelFL + " TEXT, "
+ EntityGroupId + " INTEGER, "
+ Property + " TEXT, "
+ ReportCode+ " INTEGER, "
+ Description + " TEXT, "
+ Code1Id + " INTEGER, "
+ Code2Id + " INTEGER, "
+ Code3Id + " INTEGER, "
+ Code4Id+ " INTEGER, "
+ Code5Id + " INTEGER, "
+ DefaultDimension1+ " INTEGER, "
+ DefaultDimension2 + "INTEGER, "
+ DefaultDimension3 + " INTEGER, "
+ CompanyId + " INTEGER, "
+ BranchId + " INTEGER, "
+ ReferenceDate + " TEXT, "
+ ResField1+ " TEXT, "
+ ResField2 + " TEXT, "
+ AreaId + " INTEGER, "
+ ModifiedDateTime + " TEXT, "
+ CreatedDateTime + " TEXT, "
+ RecId + " INTEGER, "
+ IsActive + " BIT,"
+ ModifiedBy + " INTEGER,"
+ CreatedBy + " INTEGER" + ") ";
db.execSQL(CREATE_M_ENTITY_TABLE);
}
我在main活动中调用此函数来绑定listview
public Cursor fetchEntities()
{
SQLiteDatabase db = dbHelper.getWritableDatabase();
String myQuery="Select Code, Label from entity";
Cursor mCursor=db.rawQuery(myQuery,null);
int rowCount=mCursor.getCount();
//Cursor mCursor = db.query(TABLE_2_NAME, new String[] {Code, Label }, null,null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
//如你所见，有一个类似于ReceivedEntityModel的参数，我从这个模型的getter获取数据，我想把它们放到一个数据库中，如下所示。
public void AddNewEntity(ReceivedEntityModel[] entity)
{
// addnewentity
SQLiteDatabase db = dbHelper.getWritableDatabase();
ContentValues values = new ContentValues();
for (int i = 0; i < entity.length; i++) {
values.put(rId, entity[i].getRId());
values.put(ParentId, entity[i].getParentId());
values.put(Code, entity[i].getCode());
values.put(Label, entity[i].getLabel());
values.put(LabelFL, entity[i].getLabelFL());
values.put(EntityGroupId, entity[i].getEntityGroupId());
values.put(ReportCode, entity[i].getReportCode());
values.put(Description, entity[i].getDescription());
values.put(Code1Id, entity[i].getCode1Id());
values.put(Code2Id, entity[i].getCode2Id());
values.put(Code3Id, entity[i].getCode3Id());
values.put(Code4Id, entity[i].getCode4Id());
values.put(Code5Id, entity[i].getCode5Id());
values.put(DefaultDimension1, entity[i].getDefaultDimension1Id());
values.put(DefaultDimension2, entity[i].getDefaultDimension2Id());
values.put(DefaultDimension3, entity[i].getDefaultDimension3Id());
values.put(CompanyId, entity[i].getCompanyId());
values.put(BranchId, entity[i].getBranchId());
values.put(ReferenceDate, entity[i].getReferenceDate());
values.put(ResField1, (String) entity[i].getResField1());
values.put(ResField2, (String) entity[i].getResField2());
values.put(AreaId, entity[i].getAreaId());
values.put(ModifiedDateTime, entity[i].getModifiedDateTime());
values.put(CreatedDateTime, entity[i].getCreatedDateTime());
values.put(RecId, entity[i].getRecId());
values.put(IsActive, entity[i].getIsActive());
values.put(ModifiedBy, entity[i].getModifiedBy());
values.put(CreatedBy, (String) entity[i].getCreatedBy());
}
db.insert(TABLE_2_NAME, null, values);
db.close();
}
这是Setup.java，fetchEntities（），AddNewEntity（）函数从那里调用.Gson Builder让我成为一个模型。我调用AddNewEntity（）
protected String doInBackground(String... urls) {
entityReqestInfo = new EntityReqestInfo();
String cevap = POST_FOR_ENTITY(urls[0], entityReqestInfo);
GsonBuilder builder = new GsonBuilder();
Gson gson = builder.create();
receivedEM = gson.fromJson(cevap, ReceivedEntityModel[].class);
myDB.getDatabaseEntityOperations().AddNewEntity(receivedEM);
pDialog.cancel();
return cevap;
}
以及我生成的所有实体Model ReceivedEntityModel类
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class ReceivedEntityModel {
private Integer rId;
private Integer ParentId;
private String Code;
private String Label;
private String LabelFL;
private Integer EntityGroupId;
private String Property;
private String ReportCode;
private String Description;
private Integer Code1Id;
private Integer Code2Id;
private Integer Code3Id;
private Integer Code4Id;
private Integer Code5Id;
private Integer DefaultDimension1Id;
private Integer DefaultDimension2Id;
private Integer DefaultDimension3Id;
private Integer CompanyId;
private Integer BranchId;
private String ReferenceDate;
private String ResField1;
private String ResField2;
private String AreaId;
private String ModifiedDateTime;
private String CreatedDateTime;
private Integer RecId;
private Boolean IsActive;
private Integer ModifiedBy;
private String CreatedBy;
private String DBranch;
private String DCompany;
private String MEntityGroup;
private List<String> MEntityTableModule = new ArrayList<String>();
private Map<String, String> additionalProperties = new HashMap<String, String>();
/**
*
* @return The rId
*/
public Integer getRId() {
return rId;
}
/**
*
* @param rId
* The rId
*/
public void setRId(Integer rId) {
this.rId = rId;
}
public ReceivedEntityModel withRId(Integer rId) {
this.rId = rId;
return this;
}
/**
*
* @return The ParentId
*/
public Integer getParentId() {
return ParentId;
}
/**
*
* @param ParentId
* The ParentId
*/
public void setParentId(Integer ParentId) {
this.ParentId = ParentId;
}
public ReceivedEntityModel withParentId(Integer ParentId) {
this.ParentId = ParentId;
return this;
}
/**
*
* @return The Code
*/
public String getCode() {
return Code;
}
/**
*
* @param Code
* The Code
*/
public void setCode(String Code) {
this.Code = Code;
}
public ReceivedEntityModel withCode(String Code) {
this.Code = Code;
return this;
}
/**
*
* @return The Label
*/
public String getLabel() {
return Label;
}
/**
*
* @param Label
* The Label
*/
public void setLabel(String Label) {
this.Label = Label;
}
public ReceivedEntityModel withLabel(String Label) {
this.Label = Label;
return this;
}
/**
*
* @return The LabelFL
*/
public String getLabelFL() {
return LabelFL;
}
/**
*
* @param LabelFL
* The LabelFL
*/
public void setLabelFL(String LabelFL) {
this.LabelFL = LabelFL;
}
public ReceivedEntityModel withLabelFL(String LabelFL) {
this.LabelFL = LabelFL;
return this;
}
/**
*
* @return The EntityGroupId
*/
public Integer getEntityGroupId() {
return EntityGroupId;
}
/**
*
* @param EntityGroupId
* The EntityGroupId
*/
public void setEntityGroupId(Integer EntityGroupId) {
this.EntityGroupId = EntityGroupId;
}
public ReceivedEntityModel withEntityGroupId(Integer EntityGroupId) {
this.EntityGroupId = EntityGroupId;
return this;
}
/**
*
* @return The Property
*/
public String getProperty() {
return Property;
}
/**
*
* @param Property
* The Property
*/
public void setProperty(String Property) {
this.Property = Property;
}
public ReceivedEntityModel withProperty(String Property) {
this.Property = Property;
return this;
}
/**
*
* @return The ReportCode
*/
public String getReportCode() {
return ReportCode;
}
/**
*
* @param ReportCode
* The ReportCode
*/
public void setReportCode(String ReportCode) {
this.ReportCode = ReportCode;
}
public ReceivedEntityModel withReportCode(String ReportCode) {
this.ReportCode = ReportCode;
return this;
}
/**
*
* @return The Description
*/
public String getDescription() {
return Description;
}
/**
*
* @param Description
* The Description
*/
public void setDescription(String Description) {
this.Description = Description;
}
public ReceivedEntityModel withDescription(String Description) {
this.Description = Description;
return this;
}
/**
*
* @return The Code1Id
*/
public Integer getCode1Id() {
return Code1Id;
}
/**
*
* @param Code1Id
* The Code1Id
*/
public void setCode1Id(Integer Code1Id) {
this.Code1Id = Code1Id;
}
public ReceivedEntityModel withCode1Id(Integer Code1Id) {
this.Code1Id = Code1Id;
return this;
}
/**
*
* @return The Code2Id
*/
public Integer getCode2Id() {
return Code2Id;
}
/**
*
* @param Code2Id
* The Code2Id
*/
public void setCode2Id(Integer Code2Id) {
this.Code2Id = Code2Id;
}
public ReceivedEntityModel withCode2Id(Integer Code2Id) {
this.Code2Id = Code2Id;
return this;
}
/**
*
* @return The Code3Id
*/
public Integer getCode3Id() {
return Code3Id;
}
/**
*
* @param Code3Id
* The Code3Id
*/
public void setCode3Id(Integer Code3Id) {
this.Code3Id = Code3Id;
}
public ReceivedEntityModel withCode3Id(Integer Code3Id) {
this.Code3Id = Code3Id;
return this;
}
/**
*
* @return The Code4Id
*/
public Integer getCode4Id() {
return Code4Id;
}
/**
*
* @param Code4Id
* The Code4Id
*/
public void setCode4Id(Integer Code4Id) {
this.Code4Id = Code4Id;
}
public ReceivedEntityModel withCode4Id(Integer Code4Id) {
this.Code4Id = Code4Id;
return this;
}
/**
*
* @return The Code5Id
*/
public Integer getCode5Id() {
return Code5Id;
}
/**
*
* @param Code5Id
* The Code5Id
*/
public void setCode5Id(Integer Code5Id) {
this.Code5Id = Code5Id;
}
public ReceivedEntityModel withCode5Id(Integer Code5Id) {
this.Code5Id = Code5Id;
return this;
}
/**
*
* @return The DefaultDimension1Id
*/
public Integer getDefaultDimension1Id() {
return DefaultDimension1Id;
}
/**
*
* @param DefaultDimension1Id
* The DefaultDimension1Id
*/
public void setDefaultDimension1Id(Integer DefaultDimension1Id) {
this.DefaultDimension1Id = DefaultDimension1Id;
}
public ReceivedEntityModel withDefaultDimension1Id(
Integer DefaultDimension1Id) {
this.DefaultDimension1Id = DefaultDimension1Id;
return this;
}
/**
*
* @return The DefaultDimension2Id
*/
public Integer getDefaultDimension2Id() {
return DefaultDimension2Id;
}
/**
*
* @param DefaultDimension2Id
* The DefaultDimension2Id
*/
public void setDefaultDimension2Id(Integer DefaultDimension2Id) {
this.DefaultDimension2Id = DefaultDimension2Id;
}
public ReceivedEntityModel withDefaultDimension2Id(
Integer DefaultDimension2Id) {
this.DefaultDimension2Id = DefaultDimension2Id;
return this;
}
/**
*
* @return The DefaultDimension3Id
*/
public Integer getDefaultDimension3Id() {
return DefaultDimension3Id;
}
/**
*
* @param DefaultDimension3Id
* The DefaultDimension3Id
*/
public void setDefaultDimension3Id(Integer DefaultDimension3Id) {
this.DefaultDimension3Id = DefaultDimension3Id;
}
public ReceivedEntityModel withDefaultDimension3Id(
Integer DefaultDimension3Id) {
this.DefaultDimension3Id = DefaultDimension3Id;
return this;
}
/**
*
* @return The CompanyId
*/
public Integer getCompanyId() {
return CompanyId;
}
/**
*
* @param CompanyId
* The CompanyId
*/
public void setCompanyId(Integer CompanyId) {
this.CompanyId = CompanyId;
}
public ReceivedEntityModel withCompanyId(Integer CompanyId) {
this.CompanyId = CompanyId;
return this;
}
/**
*
* @return The BranchId
*/
public Integer getBranchId() {
return BranchId;
}
/**
*
* @param BranchId
* The BranchId
*/
public void setBranchId(Integer BranchId) {
this.BranchId = BranchId;
}
public ReceivedEntityModel withBranchId(Integer BranchId) {
this.BranchId = BranchId;
return this;
}
/**
*
* @return The ReferenceDate
*/
public String getReferenceDate() {
return ReferenceDate;
}
/**
*
* @param ReferenceDate
* The ReferenceDate
*/
public void setReferenceDate(String ReferenceDate) {
this.ReferenceDate = ReferenceDate;
}
public ReceivedEntityModel withReferenceDate(String ReferenceDate) {
this.ReferenceDate = ReferenceDate;
return this;
}
/**
*
* @return The ResField1
*/
public String getResField1() {
return ResField1;
}
/**
*
* @param ResField1
* The ResField1
*/
public void setResField1(String ResField1) {
this.ResField1 = ResField1;
}
public ReceivedEntityModel withResField1(String ResField1) {
this.ResField1 = ResField1;
return this;
}
/**
*
* @return The ResField2
*/
public String getResField2() {
return ResField2;
}
/**
*
* @param ResField2
* The ResField2
*/
public void setResField2(String ResField2) {
this.ResField2 = ResField2;
}
public ReceivedEntityModel withResField2(String ResField2) {
this.ResField2 = ResField2;
return this;
}
/**
*
* @return The AreaId
*/
public String getAreaId() {
return AreaId;
}
/**
*
* @param AreaId
* The AreaId
*/
public void setAreaId(String AreaId) {
this.AreaId = AreaId;
}
public ReceivedEntityModel withAreaId(String AreaId) {
this.AreaId = AreaId;
return this;
}
/**
*
* @return The ModifiedDateTime
*/
public String getModifiedDateTime() {
return ModifiedDateTime;
}
/**
*
* @param ModifiedDateTime
* The ModifiedDateTime
*/
public void setModifiedDateTime(String ModifiedDateTime) {
this.ModifiedDateTime = ModifiedDateTime;
}
public ReceivedEntityModel withModifiedDateTime(String ModifiedDateTime) {
this.ModifiedDateTime = ModifiedDateTime;
return this;
}
/**
*
* @return The CreatedDateTime
*/
public String getCreatedDateTime() {
return CreatedDateTime;
}
/**
*
* @param CreatedDateTime
* The CreatedDateTime
*/
public void setCreatedDateTime(String CreatedDateTime) {
this.CreatedDateTime = CreatedDateTime;
}
public ReceivedEntityModel withCreatedDateTime(String CreatedDateTime) {
this.CreatedDateTime = CreatedDateTime;
return this;
}
/**
*
* @return The RecId
*/
public Integer getRecId() {
return RecId;
}
/**
*
* @param RecId
* The RecId
*/
public void setRecId(Integer RecId) {
this.RecId = RecId;
}
public ReceivedEntityModel withRecId(Integer RecId) {
this.RecId = RecId;
return this;
}
/**
*
* @return The IsActive
*/
public Boolean getIsActive() {
return IsActive;
}
/**
*
* @param IsActive
* The IsActive
*/
public void setIsActive(Boolean IsActive) {
this.IsActive = IsActive;
}
public ReceivedEntityModel withIsActive(Boolean IsActive) {
this.IsActive = IsActive;
return this;
}
/**
*
* @return The ModifiedBy
*/
public Integer getModifiedBy() {
return ModifiedBy;
}
/**
*
* @param ModifiedBy
* The ModifiedBy
*/
public void setModifiedBy(Integer ModifiedBy) {
this.ModifiedBy = ModifiedBy;
}
public ReceivedEntityModel withModifiedBy(Integer ModifiedBy) {
this.ModifiedBy = ModifiedBy;
return this;
}
/**
*
* @return The CreatedBy
*/
public String getCreatedBy() {
return CreatedBy;
}
/**
*
* @param CreatedBy
* The CreatedBy
*/
public void setCreatedBy(String CreatedBy) {
this.CreatedBy = CreatedBy;
}
public ReceivedEntityModel withCreatedBy(String CreatedBy) {
this.CreatedBy = CreatedBy;
return this;
}
/**
*
* @return The DBranch
*/
public String getDBranch() {
return DBranch;
}
/**
*
* @param DBranch
* The D_Branch
*/
public void setDBranch(String DBranch) {
this.DBranch = DBranch;
}
public ReceivedEntityModel withDBranch(String DBranch) {
this.DBranch = DBranch;
return this;
}
/**
*
* @return The DCompany
*/
public String getDCompany() {
return DCompany;
}
/**
*
* @param DCompany
* The D_Company
*/
public void setDCompany(String DCompany) {
this.DCompany = DCompany;
}
public ReceivedEntityModel withDCompany(String DCompany) {
this.DCompany = DCompany;
return this;
}
/**
*
* @return The MEntityGroup
*/
public String getMEntityGroup() {
return MEntityGroup;
}
/**
*
* @param MEntityGroup
* The M_EntityGroup
*/
public void setMEntityGroup(String MEntityGroup) {
this.MEntityGroup = MEntityGroup;
}
public ReceivedEntityModel withMEntityGroup(String MEntityGroup) {
this.MEntityGroup = MEntityGroup;
return this;
}
/**
*
* @return The MEntityTableModule
*/
public List<String> getMEntityTableModule() {
return MEntityTableModule;
}
/**
*
* @param MEntityTableModule
* The M_EntityTableModule
*/
public void setMEntityTableModule(List<String> MEntityTableModule) {
this.MEntityTableModule = MEntityTableModule;
}
public ReceivedEntityModel withMEntityTableModule(
List<String> MEntityTableModule) {
this.MEntityTableModule = MEntityTableModule;
return this;
}
public Map<String, String> getAdditionalProperties() {
return this.additionalProperties;
}
public void setAdditionalProperty(String name, String value) {
this.additionalProperties.put(name, value);
}
public ReceivedEntityModel withAdditionalProperty(String name, String value) {
this.additionalProperties.put(name, value);
return this;
}
}
答案 0 :(得分：0)
列名称在哪里定义？
未使用目标名称创建DefaultDimension2列
在你的桌子上，因为你在这里忘了一个空格：
+ DefaultDimension2 + "INTEGER, "
一定是
+ DefaultDimension2 + " INTEGER, "
因此，假设DefaultDimension2列名称定义为
public String DefaultDimension2 = "DefaultDimension2";
它实际上是"DefaultDimension2INTEGER, "而不是"DefaultDimension2 INTEGER, "
这真是一个常见的错误，主要是因为匆忙。