{* ../../docs_src/query_params_str_validations/tutorial003_an_py310.py hl[10] *}

## 添加正则表达式 { #add-regular-expressions }

你可以定义一个参数必须匹配的 <dfn title="正则表达式（regex 或 regexp）是用于定义字符串搜索模式的字符序列。">正则表达式</dfn> `pattern`：

{* ../../docs_src/query_params_str_validations/tutorial004_an_py310.py hl[11] *}

这个特定的正则表达式通过以下规则检查接收到的参数值：

- `^`：必须以接下来的字符开头，前面没有其他字符。
- `fixedquery`：值必须精确等于 `fixedquery`。

 * override one or more methods to modify the behavior of the backing map as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingNavigableMap} forward <i>indiscriminately</i>
 * to the methods of the delegate. For example, overriding {@link #put} alone <i>will not</i> change

 * override one or more methods to modify the behavior of the backing map as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingNavigableMap} forward <i>indiscriminately</i>
 * to the methods of the delegate. For example, overriding {@link #put} alone <i>will not</i> change

constraints.NotNull.message = {item} wajib diisi.
constraints.Null.message = {item} harus null.
constraints.Past.message = {item} harus berupa nilai masa lalu.
constraints.Pattern.message = {item} tidak cocok dengan "{regexp}".
constraints.Size.message = Ukuran {item} harus antara {min} dan {max}.
# ----------------------------------------------------------
# Hibernate Validator
# -------------------

    void testDecodeReadsCorrectBytes() throws SMBProtocolDecodingException {
        // Prepare test data
        byte[] buffer = new byte[22];

        // Fill with pattern to verify we read correct bytes
        for (int i = 0; i < buffer.length; i++) {
            buffer[i] = (byte) (i + 1);
        }

        // Decode

      - integration-tests
    steps:
      - name: Download Caches
        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        with:
          merge-multiple: true
          pattern: 'cache-${{ runner.os }}*'
          path: ${{ env.MIMIR_LOCAL }}
      - name: Publish cache
        uses: actions/cache/save@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5.0.4

constraints.Min.message = {item} 必須大於或等於 {value}。
constraints.NotNull.message = {item} 不能為空。
constraints.Null.message = {item} 必須為 null。
constraints.Past.message = {item} 必須是過去的日期。
constraints.Pattern.message = {item} 不匹配 "{regexp}"。
constraints.Size.message = {item} 的大小必須在 {min} 到 {max} 個字元之間。
# ----------------------------------------------------------
# Hibernate Validator
# -------------------

            stopwordsFile.reload(null, is);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    // Test basic getters
    @Test
    public void test_getType() {
        assertEquals("stopwords", stopwordsFile.getType());
    }

    @Test
    public void test_getPath() {

        when(cfg.getResponseTimeout()).thenReturn(2222);

        // Act & Assert
        assertEquals(2222, transport.getResponseTimeout(req));
    }

    @Test
    @DisplayName("Basic getters: address, hostName, inflight, sessions")
    void basicGetters() {
        assertEquals(address, transport.getRemoteAddress());
        assertNull(transport.getRemoteHostName(), "tconHostName starts null");

  `Take off your hat,' the King said to the Hatter.

  `It isn't mine,' said the Hatter.

  `Stolen!' the King exclaimed, turning to the jury, who
instantly made a memorandum of the fact.

  `I keep them to sell,' the Hatter added as an explanation;
`I've none of my own.  I'm a hatter.'

  Here the Queen put on her spectacles, and began staring at the
Hatter, who turned pale and fidgeted.