uview-plus组件库全面升级更新，订单结算判断支付方式是否可用代码调整，公众号关注二维码修改

uni_modules/uview-plus/components/u-markdown/u-markdown.vue

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+<template>
+  <view class="up-markdown" :class="theme">
+    <up-parse :content="parsedContent" :previewImg="previewImg"></up-parse>
+  </view>
+</template>
+
+<script>
+import { marked } from './marked.esm.js';
+
+export default {
+  name: 'up-markdown',
+  props: {
+    // markdown内容
+    content: {
+      type: String,
+      default: ''
+    },
+    // 是否启用图片预览
+    previewImg: {
+      type: Boolean,
+      default: true
+    },
+    // 是否显示代码块行号
+    showLineNumber: {
+      type: Boolean,
+      default: false
+    },
+    // 主题样式 'light' | 'dark'
+    theme: {
+      type: String,
+      default: 'light'
+    }
+  },
+  data() {
+    return {
+      parsedContent: ''
+    };
+  },
+  watch: {
+    content: {
+      handler(newVal) {
+        this.parseMarkdown(newVal);
+      },
+      immediate: true
+    }
+  },
+  methods: {
+    // 解析markdown内容
+    parseMarkdown(content) {
+      if (!content) {
+        this.parsedContent = '';
+        return;
+      }
+
+      // 使用marked解析markdown
+      let parsed = marked(content);
+      
+      // 处理代码块
+      parsed = this.handleCodeBlock(parsed);
+      
+      // 应用主题样式
+      parsed = this.applyTheme(parsed);
+      
+      this.parsedContent = parsed;
+    },
+    
+    // 处理代码块
+    handleCodeBlock(html) {
+      // 添加代码块样式和行号
+      return html.replace(/<pre><code([^>]*)>([^<]+)<\/code><\/pre>/g, (match, lang, code) => {
+        const language = lang.match(/class="language-([^"]+)"/);
+        const langClass = language ? `language-${language[1]}` : '';
+        
+        let result = `<pre class="up-markdown-code ${langClass}">`;
+        
+        if (this.showLineNumber) {
+          // 添加行号
+          const lines = code.split('\n').filter(line => line.trim() !== '');
+          result += '<span class="up-markdown-line-numbers">';
+          lines.push('');
+          lines.forEach((_, index) => {
+            result += `<span class="up-markdown-line-number">${index + 1}</span>`;
+          });
+          result += '</span>';
+        }
+        
+        result += `<code class='code-lang ${langClass}'>${code}</code></pre>`;
+        return result;
+      });
+    },
+    
+    // 应用主题样式
+    applyTheme(html) {
+      // 可以根据theme属性添加不同的样式类
+      return html;
+    }
+  }
+};
+</script>
+
+<style lang="scss" scoped>
+.up-markdown {
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+  font-size: 16px;
+  line-height: 1.6;
+  color: #333;
+  padding: 16px;
+  word-wrap: break-word;
+  
+  /* 标题样式 */
+  ::v-deep h1 {
+    font-size: 32px;
+    margin: 8px 0;
+    font-weight: bold;
+  }
+  
+  ::v-deep h2 {
+    font-size: 24px;
+    margin: 8px 0;
+    font-weight: bold;
+  }
+  
+  ::v-deep h3 {
+    font-size: 18px;
+    margin: 7px 0;
+    font-weight: bold;
+  }
+  
+  ::v-deep h4 {
+    font-size: 16px;
+    margin: 7px 0;
+    font-weight: bold;
+  }
+  
+  ::v-deep h5 {
+    font-size: 13px;
+    margin: 6px 0;
+    font-weight: bold;
+  }
+  
+  ::v-deep h6 {
+    font-size: 10px;
+    margin: 5px 0;
+    font-weight: bold;
+  }
+  
+  /* 段落样式 */
+  ::v-deep p {
+    margin: 16px 0;
+  }
+  
+  /* 链接样式 */
+  ::v-deep a {
+    color: #007AFF;
+    text-decoration: none;
+    
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+  
+  /* 列表样式 */
+  ::v-deep ul,
+  ::v-deep ol {
+    margin: 16px 0;
+    padding-left: 32px;
+    
+    li {
+      margin: 8px 0;
+    }
+  }
+  
+  ::v-deep ul li {
+    list-style-type: disc;
+  }
+  
+  ::v-deep ol li {
+    list-style-type: decimal;
+  }
+  
+  /* 引用样式 */
+  ::v-deep blockquote {
+    margin: 8px 0;
+    padding: 0 10px;
+    border-left: 4px solid #ccc;
+    color: #666;
+  }
+  
+  /* 代码样式 */
+  ::v-deep &-code {
+    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
+    font-size: 14px;
+    background-color: #f6f8fa;
+    padding: 3px 6px;
+    border-radius: 3px;
+    display: flex;
+  }
+  ::v-deep .code-lang {
+    width: 100%;
+    overflow-x: auto;
+  }
+  
+  ::v-deep pre {
+    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
+    font-size: 14px;
+    background-color: #f6f8fa;
+    padding: 16px;
+    overflow: auto;
+    border-radius: 6px;
+    margin: 16px 0;
+    
+    ::v-deep code {
+      background: none;
+      padding: 0;
+    }
+  }
+  
+  /* 表格样式 */
+  ::v-deep table {
+    border-collapse: collapse;
+    margin: 16px 0;
+    width: 100%;
+    
+    th,
+    td {
+      padding: 6px 13px;
+      border: 1px solid #dfe2e5;
+    }
+    
+    th {
+      font-weight: 600;
+    }
+    
+    tr:nth-child(2n) {
+      background-color: #f6f8fa;
+    }
+  }
+  
+  /* 图片样式 */
+  ::v-deep img {
+    max-width: 100%;
+    box-sizing: content-box;
+    background-color: #fff;
+    margin: 16px 0;
+  }
+  
+  /* 分割线样式 */
+  ::v-deep hr {
+    height: 1px;
+    padding: 0;
+    margin: 24px 0;
+    background-color: #e1e4e8;
+    border: 0;
+  }
+  
+  /* 深色主题 */
+  &.dark {
+    color: #ccc;
+    background-color: #1e1e1e;
+    
+    ::v-deep &-code {
+      background-color: #2d2d2d;
+      color: #dcdcdc;
+    }
+    
+    ::v-deep pre {
+      background-color: #2d2d2d;
+      color: #dcdcdc;
+    }
+
+    ::v-deep blockquote {
+        margin: 8px 0;
+        padding: 0 10px;
+        border-left: 4px solid #ccc;
+        color: #bbb;
+    }
+    
+    ::v-deep a {
+      color: #4da6ff;
+    }
+  }
+}
+
+/* 代码块行号样式 */
+::v-deep .up-markdown-line-numbers {
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  padding-right: 10px;
+  margin-right: 10px;
+  border-right: 1px solid #ddd;
+  user-select: none;
+  
+  .up-markdown-line-number {
+    color: #999;
+    font-size: 14px;
+    line-height: 1.6;
+  }
+}
+</style>