PHP と Vue.js を使用して統計グラフをエクスポートおよび印刷する方法

<template>
  <div class="chart-container">
    <div ref="chart" class="chart"></div>
  </div>
</template>

<script>
import echarts from 'echarts'

export default {
  mounted() {
    this.chart = echarts.init(this.$refs.chart)
    this.renderChart()
  },
  methods: {
    renderChart() {
      // 统计数据
      const data = {
        categories: ['A', 'B', 'C', 'D', 'E'],
        series: [
          {
            name: '数据1',
            data: [20, 30, 15, 40, 25]
          },
          {
            name: '数据2',
            data: [10, 15, 25, 20, 30]
          }
        ]
      }

      // 配置项
      const options = {
        title: {
          text: '统计图表'
        },
        legend: {
          data: data.series.map(item => item.name)
        },
        xAxis: {
          data: data.categories
        },
        yAxis: {},
        series: data.series.map(item => ({
          name: item.name,
          type: 'bar',
          data: item.data
        }))
      }

      // 渲染图表
      this.chart.setOption(options)
    }
  }
}
</script>

<style scoped>
.chart-container {
  width: 100%;
  height: 400px;
}

.chart {
  width: 100%;
  height: 100%;
}
</style>

export default {
  methods: {
    exportChart() {
      // 获取图表实例
      const chartInstance = echarts.getInstanceByDom(this.$refs.chart)

      // 导出为图片格式
      chartInstance
        .capture()
        .then(canvas => {
          const imageData = canvas.toDataURL("image/png")
          const link = document.createElement("a")
          link.href = imageData
          link.download = "chart.png"
          link.click()
        })
        .catch(error => console.error(error))

      // 导出为PDF格式
      chartInstance
        .capture()
        .then(canvas => {
          const imageData = canvas.toDataURL("image/png")
          const pdf = new jsPDF()
          pdf.addImage(imageData, "PNG", 0, 0)
          pdf.save("chart.pdf")
        })
        .catch(error => console.error(error))
    }
  }
}

<template>
  <div>
    <div class="chart-container">
      <div ref="chart" class="chart"></div>
    </div>
    <button @click="exportChart">导出图表</button>
  </div>
</template>

export default {
  methods: {
    printChart() {
      // 获取图表实例
      const chartInstance = echarts.getInstanceByDom(this.$refs.chart)

      // 导出为图像
      chartInstance
        .capture()
        .then(canvas => {
          const imageData = canvas.toDataURL("image/png")
          const pdf = new jsPDF()
          pdf.addImage(imageData, "PNG", 0, 0)
          pdf.autoPrint()
          window.open(pdf.output('bloburl'), '_blank')
        })
        .catch(error => console.error(error))
    }
  }
}

<template>
  <div>
    <div class="chart-container">
      <div ref="chart" class="chart"></div>
    </div>
    <button @click="printChart">打印图表</button>
  </div>
</template>