小编Tha*_*Ngo的帖子

我在Hibernate中遇到了问题.我尝试解析List但它抛出异常:HTTP Status 500 - could not extract ResultSet.当我调试时,它在线路故障query.list()..

我的示例代码在这里

@Entity
@Table(name = "catalog")
public class Catalog implements Serializable {

@Id
@Column(name="ID_CATALOG")
@GeneratedValue 
private Integer idCatalog;

@Column(name="Catalog_Name")
private String catalogName;

@OneToMany(mappedBy="catalog", fetch = FetchType.LAZY)
private Set<Product> products = new HashSet<Product>(0);

//getter & setter & constructor
//...
}


@Entity
@Table(name = "product")
public class Product implements Serializable {

@Id
@Column(name="id_product")
@GeneratedValue 
private Integer idProduct;

@ManyToOne
@JoinColumn(name="ID_CATALOG")
private Catalog catalog;

@Column(name="product_name")
private String productName;

@Column(name="date")
private Date …

我有2张桌子:A和B.A有一个外键B和B有一个外键A.但我不能让从外键A到B,因为A在之前创建的B.

当SQLite不支持时,我该如何解决Alter Table？

这是我的示例数据库:

Create Table A(
  A_ID    INTEGER PRIMARY KEY,
  B_ID    INTEGER,
  A_DESCRIPTION    TEXT,

  FOREIGN KEY (B_ID) REFERENCES B(B_ID)
)

Create Table B(
  B_ID    INTEGER PRIMARY KEY,
  A_ID    INTEGER,
  B_DESCRIPTION    TEXT,

  FOREIGN KEY (A_ID) REFERENCES A(A_ID)
)

我尝试将图像上传到我的资源中的文件夹"/resouces/images/demo.jpg"但它无法运行.你能帮忙在spring mvc上传我的资源吗？如果我上传到"C://test//demo.jpg",那没关系.我的样本:

    String filename = File.separator + "resources"
                       + File.separator + "images" + File.separator
                       + filea.getOriginalFilename();
    outputStream = new FileOutputStream(filename);
    int readBytes = 0;
    byte[] buffer = new byte[8192];
    while ((readBytes = inputStream.read(buffer, 0, 8192)) != -1) {
        System.out.println("===ddd=======");
        outputStream.write(buffer, 0, readBytes);
    }

我不知道Mockito.verify在这种情况下我该怎么用.如何将false传递给Mockito.verify？我尝试了两种不同的方法,但它不起作用.

public Sample someMethod(Sample s, boolean a){....}
@Test
public void test() {
...
verify(mock).someMethod(sampleCaptor.capture(), false));
verify(mock).someMethod(sampleCaptor.capture(), org.mockito.Matchers.eq(false)));
...
}

当我得到布局宽度时我有问题...添加新视图后它没有返回真正的宽度？...我怎么解决它...谢谢...这是我的示例代码.

llDayHeaderTable = (LinearLayout) viewGroup
            .findViewById(R.id.llDayHeaderTable);
    LayoutInflater vi = (LayoutInflater) parent
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    for (View v : vTmp) {
        llDayHeaderTable.removeView(v);
    }
    vTmp.removeAllElements();

    for (int i = 0; i < dto.arrProductTitleList.size(); i++) {
        String productName = dto.arrProductTitleList.get(i).productInfoName;
        vItemHeader = vi.inflate(R.layout.layout_kpi_sku_group_accum_item,
                null);
        TextView tv = (TextView) vItemHeader
                .findViewById(R.id.tvHeaderProduct);
        tv.setText("" + productName);
        llDayHeaderTable.addView(vItemHeader);
        vTmp.add(vItemHeader);
    }
int width = llDayHeaderTable.getWidth();